RAM for your Macintosh
168-pin Memory DIMM, 5V DRAM
Memory modules for the following Macs:
- Power Mac 7300, 7500, 7600, 8500, 8600, 9500, 9600
- Performa 5400/120, 5400/180, 6360, 6400/180, 6400/200
168 pin DIMMs are available in the following sizes: 8MB, 16MB, 32MB, 64MB, 128MB. The number of chips on the DIMMs module may vary as will single sided or double sided.
Please do your own research for your specific computer. There are many guides available on the internet. Manufacturer labeling of the memory modules can be hard to find or decipher, and I may not have the means to provide all the details such as FPM and EDO, but unless they are labeled, I have no way of knowing which may be what.
All offered here have been pulled out of one of the above working computers, and most of the Macs that have more than one memory slot do not have matching RAM modules – they all vary in sizes and manufacturers, although matched pairs will be offered when available.
Please research your Macs requirements before ordering.
RAM for your Macintosh or LaserWriter.
30-pin Memory SIMM
Memory modules for the following Macs:
Compact Macintosh: Plus, SE, SE-FDHD, SE/30, Classic, Classic II, Color Classic
LC series: LC, LC II
Macintosh II, IIx, IIcx, IIci, IIsi, IIvx, IIvi
Quadra 700, 900, 950
Performa 200, 250, 275, 400, 405, 410, 430, 600, 600CD
Workgroup Server 95
LaserWriter IIf, IIg, Select 300
SIMM modules must be installed in pairs or sets of four depending on your Mac. Your Mac also has minimum and maximum memory size and speed (ns or nanoseconds) requirements. SIMMs are available in the following sizes: 256K, 1MB,
2 MB, 4MB, 16MB. The number of chips on the SIMMs module may vary. These are all non-parity.
SIMMs have been pulled from working systems and will be sent as matched pairs or sets of four. They come from a variety of manufacturers.
Please research your Mac’s requirements before ordering.
RAM for your Macintosh
72-pin Memory SIMM
Memory modules for some LaserWriter Printers as well as the following Macs:
- LC III, LC III+
- Performa/LC 450, 460, 466, 467, 475, 476, 520, 550, 560, 575, 576, 577, 580, 630
- Performa/LC 630, 630 DOS, 640 DOS needs to be FPM
- Mac TV
- Color Classic II
- Quadra/Centris 605, 610, 630, 650, 660AV, 800, 840AV
- Performa 5200, 5210, 5215, 5220, 5260, 5300
- Performa 6205, 6210, 6214, 6216, 6218, 6220, 6230, 6260, 6290, 6300, 6310, 6320, 6360, 6400, 6480
- Performa 6110, 6112, 6115, 6116, 6117, 6118
- PowerMac 6100, 7100, 8100 **must be installed in matched pairs
72 pin SIMMs are available in the following sizes: 2MB, 4MB, 8MB, 16MB, 32MB, 64MB. The number of chips on the SIMMs module may vary as will single sided or double sided. Nine chip modules have parity and will also work on pc’s.
Please do your own research for your specific computer. There are many guides available on the internet. Manufacturer labeling of the memory modules can be hard to find or decipher, and I may not have the means to provide all the details such as FPM and EDO. Unless they are labeled, I have no way of knowing which may be what. Assume FPM.
All offered here have been pulled out of one of the above working computers.
Please research your Macs requirements before ordering.
Matching pairs are available and will be provided when you order 2 or more modules.
Have a mangled or broken ADB port on your keyboard or computer? While many times, the port may just need fresh solder, it is possible that something truly is broken.These are used and have been carefully removed and tested before and after to work.
This should work on every Apple external ADB keyboard, and appears to be identical to the one on the motherboard or logic board of the computer (Apple IIGS, Macintosh II/SE through Beige G3) as well.
Space saver when a wall is close.
Angled Power cable or cord. Most often found with the Apple products from the ’80’s and I think of them as printer power cables for the ImageWriter and ImageWriter II printers.
Also the most common Apple branded cable for the pre G3 products. Black cables are generic, Apple cables came in several shades – likely to match “snow white”, “platinum” and “beige” coloring, but even those aren’t consistent. If you have a preference, please leave a note at checkout. Limited quantities. All are in the 5′-7′ length range.
Macintosh II and Compact Macs
Apple 805-5050. Found in the Mac SE, SE FDHD, SE/30, Classic, Classic II, II, IIx, IIfx, IIvx, IIvi, Performa 600, Performa 200, Quadra 900 and maybe more. Also available is the dual drive setup for the FDHD.
Used to attach the keyboard or other ADB device such as a trackball.
This cable will work for Macintosh SE through early G3’s and the Apple IIGS.These 3′ coiled genuine Apple ADB cables may come with any of the following part numbers: 590-0361-A / 590-0361-B / 590-0616-A
These caps are unique to the Apple Adjustable Keyboard, Model M1242. The bottom row of keys are angled to fit the design. Key caps look Nice. The space bar assembly includes stabilizer wires and spring. Although provisions were made in every non square cap for wires, only the following keys have them and they are included: Delete, return, left and right shift, tab and caps lock.
Apple Adjustable Keyboard, Model M1242. This unique keyboard doesn’t share parts with any other model. Keyboard tested to work, although several keys have the common malady of not registering a key press and then you get a bunchhhhhh. Cosmetically Nice, it was missing the rests and flip down feet when it came in. Key caps are available on this page. Available here are the base plate, base plate screws (set of 6), side wing screws (set of 2, on set per side), flip down feet tension clips, and the top covers.
As soon as I figure out how to get the ribbon cable out of each side (see last 2 pics) more parts will be available. Please Contact me if you know how these ribbon cable clips work.
Use the AudioVision Display with any Macintosh that has a Db-15 pin monitor port.
AudioVision 14 Display Adapter
Retail Part # 922-0419 (part of the M1243LL/A kit)
This adapter that allows you to use the AudioVision monitor with any Mac with a DB-15 monitor port. It allows you to bring in audio, video and adb. All of which is automatically taken care through the HDI45 port on the 6100/7100/8100 series.
Here is an excerpt from: http://support.apple.com/kb/TA29765?viewlocale=en_US
“Q: What is the Integrated Desktop Cable (IDC)?
A: It’s a new high-density cable for plug-and-play set-up. The IDC replaces five cables that would normally have to run from your computer to your display to provide the same AudioVision functionality (sound-in, sound-out, ADB, video-in, video-out). Now with a single “snap” you’ll be connected.
Q: When do I need the AudioVision Adapter?
A: It is required on all modular Macintosh models that do not have the high-density connector on the back panel of the computer. The part number is M1243LL/A. Future Apple CPU’s will support the new integrated desktop cable and, therefore, will not require the AudioVision adapter.”
I do not have one of these monitors and am unable to test the adapter, so Sold-as-is
The Apple Basic Color Monitor, Model M1595LL/A features a color 14″ screen, and a resolution of 640×480. This Display has a VGA 15 pin interface cable.
This Monitor has light discoloration and numerous scuff marks. Monitor cable is built in and a power cable is free upon request if needed.
I just came across the Apple box – no packing materials for this monitor. It had been repurposed for someone’s move (marker writing only on top) and the serial numbers do not match. Contact me if you would like it. It may all need to be put inside another box for shipping – so would add a couple pounds.
Used in selected models of these families: Macintosh II, Performa, Centris, Quadra, Power Mac
Apple CD-ROM drive Mounting Rails, Apple 922-0067, stamped 815-0645. Used in the Macintosh IIvx, IIvi, Performa 600, Power Mac 7100, Centris / Quadra 650 and maybe others. Please check yours, or do some research for your particular application. Sold by the pair with mounting screws.
Plug and Play
Apple 513-0312 (SCSI) CD-ROM audio adapter and CD-ROM SCSI and power adapter. Allows a slide in connection. Used in the Performa 6200, 6300 and others.
Important: There are two kinds that I know of and they are completely dependent on which way your Molex power connector on the CD drive faces – up or down. We’ll call it the key or angle of the power connector at the top or at the bottom. Note that some adapters do not have part numbers on them. Sold in a set.
The Apple Color Plus 14″ Display, Model M1787 features a color 14″ screen, and a resolution of 640×480. This Display should work with every Mac with a DB-15 15 pin display port from Macintosh II to Beige G3.
A) SN CY4415861S2.Looks Nice! (This is the one pictured above)
B) SN CY335RPV1S2. Light to Medium discoloration, especially on top and left side. Area on top left corner where something heavy duty was glued. This one can be seen here.
Monitor and power cables included.
Apple Design Keyboard, Model M2980. This ADB keyboard was one of the last and most common models made before the USB keyboards were introduced with the iMac. Release in the early ’90’s, to match the Power Macs and Performa’s. It will work on any Mac with an ADB port from the Macintosh II to the Beige G3. This is the only ADB keyboard with an integrated cable.
Shown are some of the many variations in stock. Keyboards range from Nice, Light discoloration, Medium discoloration, and Severe and are priced accordingly. Most of the Severe only have discoloration on one end as if they were sitting on end inside an open top box in the sun.These will ship with a color matched Apple Desktop Bus Mouse II.
Apple Design Keyboard ~ Model M2980
There are 4 versions of the Apple Design Keyboard, M2980, that I know of. None of the parts are interchangeable.
Step 1, determine which version you need parts for by where it was made or assembled and what the flip down and rubber feet look like:
Pictured above in manufacturing date order, from left to right – USA/Mexico, Thailand, China. Last two photos are of the four different key caps all are an F15 key cap in the order of China, Mexico/USA, Thailand A, and Thailand B from left to right.
Thailand ~ Long, narrow flip down feet. (3) Rectangular rubber feet. Stamped label on left. 4 screws.
Alternate version has (2) rectangular rubber feet and 8 screws.
Macintosh II and SE to Beige G3
This is the first ADB (Apple Desktop Bus) mouse made for the Mac. Family number G5431 was introduced with the Macintosh II and SE. It will work on all Macs through the beige G3 although it was replace by the Desktop Bus Mouse II in 1993. The Apple IIGS mouse is identical except for the model number.
There were 3 versions of the G5431 that I am aware of. The top and case look identical, the original is the one on the left with the black mouse ball (Taiwan). I think the one in the middle (USA) was next and the one on the right is the last (Malaysia).
Last photo shows some of the coloring variations, most will look like the middle two. They are matched to a keyboard if purchased together.
Apple M2706. Introduced in 1993, this one button teardrop mouse is the second and last ADB mouse model for the Macintosh. It works on any Mac with an ADB port from the Macintosh II through the Beige G3. It will also work on the Apple IIGS.
Cosmetics on this mouse vary greatly from very Nice, with no or little discoloration, Lightly discolored or faded, Medium or splotchy discoloration often seen in one area, and Severely discolorated to orange. Choose below, priced accordingly. All have been cleaned and work as they should. The mouse you receive may have a different color mouse ball and a stamped label instead of the actual label. When purchased with a keyboard, color will be matched as closely as possible.
Introduced in 1993, the Apple Desktop Bus Mouse II was the last ADB mouse model. On the outside they look the same, but I have identified 4 versions over their long life. No parts except the 7/8” mouse ball are interchangeable between them.
1) Made in Taiwan. These have black mouse balls. Manufactured by Logitech. Black ball cage. The mouse “tail” or cable is removable. The two screws holding it together are underneath the label. Ball retainer has no hole, and has 2 plain tabs on the underside.
Top case: 400791 w/400792 button. Bottom case: 400793. Retainer: 400685. Controller board: 200343.
2) Made in China. Gray mouse ball. The only one with a stamped label, although the single screw is underneath the serial number sticker at the bottom. 2 piece controller board uses a Logitech chip. No ball cage, it is part of the base. The rollers stay in the base. The mouse “tail” or cable is removable. Ball retainer has a hole at the bottom and two stepped tabs with a hole in each. Top case: 400902 w/401007 button. Bottom case: 401006. Retainer: 400905. Controller board: 201002.
3) Made in Malaysia. Version A. Gray mouse ball. Manufactured by Mitsumi. Black ball cage is held in by 2 screws. The mouse “tail” or cable is NOT removable. The two screws holding it together are underneath the label. Ball retainer has no hole, and has 2 split tabs on the underside.
Top case: 64-3161 w/64-3162 button. Bottom case: 64-3160. Retainer: 64-3163.
4) Made in Malaysia. Version B. Gray mouse ball. Manufactured by Mitsumi. No ball cage, it is part of the base. The rollers stay in the bottom case. The mouse “tail” or cable is NOT removable. The two screws holding it together are underneath the label. Ball retainer has a hole on one side, and has 2 tabs w/oval holes on the underside.
Top case: 64-4475 w/64-4476 button. Bottom case: 64-4474. Retainer: 64-4690.
Mouse ball retainer
Mouse ball, black 7/8” (21.8mm)
Mouse ball, gray 7/8” (21.8mm)
Mouse bottom case *with teflon strips if possible
Mouse bottom case w/rollers
Mouse top case with attached “button”
Board assy w/cable
The mice used for parts do not work at all, the cable is damaged, the cursor is very jumpy, or the click is funky or may not click at all.
A9M0331 & G5431 Parts
Introduced with the Apple IIGS in 1986, it didn’t have a name printed on the label, simply Model No A9M0331.
The Macintosh got the same mouse later – introduced with the Macintosh II and the SE. The label not only sported a name, Apple Desktop Bus Mouse, but was given a Family Number G5431.
Both numbers were used for the duration of this wedge shaped mouse, and there are several versions of them over the next 6 years.
If the mouse ball is black and there are two diagonal notches or cutouts on the bottom for the mouse retainer, all parts seem to be interchangeable between 1 and 2 below for the purpose of this website. The teflon strips are notorious for coming unglued on these versions, so priority is given to complete working mice, I cannot guarantee that the bottom case or retainer ring will have these strips:
1) A9M0331 (black ball). The mouse was made by Logitech in Taiwan. The controller board is beige colored on the top and green underneath. Printed on the underside of the board is “A D B Mouse by Logitech” and the particular one I am looking at says Rev C2. The interior ball cage is white. The mouse base is stamped 400116. The mouse top is stamped 400115. The button part of the top is stamped 400117. The retainer ring is stamped 400118.
2) G5431 (black ball). The mouse was made by Logitech in Taiwan. The controller board is green. Printed on the board is “Logitech AT Rev B”, P/N 200048-00. The interior ball cage is black. The mouse base is stamped 400116. The mouse top is stamped 400115. The button part of the top is stamped 400234. The retainer ring is stamped 400235.
3) G5431 (gray ball). This mouse was made by Alps in the U.S.A. The controller board is brown. Stamped Alps 820-0232. The gray mouse ball is 1” (25mm). The ball ball retainer is round with a V at the bottom indicating pull it down to remove it. There is no separate ball cage, it is part of the case. The mouse base is stamped 815-1090. The mouse top is stamped 815-1092. The button part of the top is stamped 815-1091. The retainer ring does not have a number. The lower teflon is not on the ring, but on the base. Upon removal of the board assy, one roller and spring may fall out. Two little white plastic supports for the other rollers may fall off.
The following two look identical from the outside, but the ball and ribbed retainer are the only parts interchangeable:
4) A9M0331 (gray ball). The mouse was made in the USA. The controller board is green. Unknown manufacturer, but board stamped 820-0146. The gray mouse ball is 1” (25mm). The mouse ball retainer (gray or black) is round and ribbed with 3 tabs that mate to the bottom of the case. The ball cage is white. The controller board is screwed to the bottom of the case with 3 screws.The mouse base is stamped 815-0733. The mouse top is stamped 815-0732. The button part of the top is stamped 815-0852. The retainer ring may be unstamped. Two or all three of the rollers are steel.
5) G5431 (gray ball). The mouse was made by Mitsumi in Malaysia. The controller board is brown. Stamped Mitsumi. The gray mouse ball is 1” (25mm). The mouse ball retainer (gray) is round and ribbed with 3 tabs that mate to the bottom of the case. The ball cage is black. The controller board is screwed to the bottom of the case with 2 screws.The mouse base is stamped 64-1259. The mouse top is stamped 64-1260. The button part of the top is stamped 64-1261. The retainer ring may be unstamped or marked 64-1262.
Mouse ball retainer, complete (with teflon strip if it is supposed to have it)
Mouse ball retainer, missing teflon strip
Mouse ball, black 7/8” (21.8mm)
Mouse ball, gray 1”(25mm)
Screws, case (set of 4)
Mouse bottom case (may or may not have teflon strip(s))
Mouse top case with attached “button”
Board assy w/cable
Board screws (set of 2 or 3)
Teflon strip, front
Teflon strip, mouse retainer *on mouse #3, this strip is on the bottom of the case.
Regarding the controller boards: They are for parts or repair only. The mice used for parts do not work at all, have a smashed cable end, the cursor is very jumpy, or the click is funky – it doesn’t stay held down, or come up, or a single click is two, etc.
Introduced in 1987, the Apple Extended Keyboard, M0115 is Apple’s heaviest keyboard and first extended keyboard to include F keys and PC style navigation keys. Introduced alongside the smaller Apple Keyboard, M0116 it was offered as the other optional keyboard with the Macintosh II and Macintosh SE. Featuring an ADB port on both sides for cable connection to the Mac from one and a mouse in the other. As with it’s successor, the Extended Keyboard II, it includes guide posts for templates that came with many software applications. Still one of the most popular keyboards ever with it’s clicky Alps key switches!
Keyboard comes with an ADB cable and matching mouse. While all of the keys retain their original color (other than the spacebar), the cases are prone to discoloration. In stock are keyboards with Medium and Severe discoloration. The Medium has engraving on the top left corner.
Introduced in 1990, the Apple Extended Keyboard II, M3501 replaced the Extended Keyboard. Changes include some cosmetics, a slightly softer and quieter key click, and an adjustable height bar. Featuring an ADB port on both sides for cable connection to the Mac from one and a mouse in the other. As with it’s predecessor, the Extended Keyboard, it includes guide posts for templates that came with many software applications. Apple’s last mechanical keyboard, it is still one of the most popular keyboards ever with it’s clicky Alps key switches!
Keyboard comes with an ADB cable and matching mouse. Note that this keyboard came out before the Apple Desktop Bus Mouse II, so depending on your Macintosh Model, it would have been used with either mouse – Apple ADB Mouse or ADB Mouse II – take your pick.
Keyboards available as Nice, Light, Medium and Severe discoloration, and priced accordingly.
The template guide shown in the last picture is for illustration in case you’re wondering why the pattern of discoloration appears the same on many of these keyboards. It is the only one I have been able to locate and it has been modified by the previous owner, so is not included.
Apple IIGS, Apple IIc Plus, Apple 3.5 Drive, Macintosh IIsi, IIvx
These feet are used on the Apple IIGS, IIc Plus, 3.5 Drive, Color Monitor IIc, AppleColor Composite Monitor, Macintosh IIsi, IIvx, Universal Monitor Stand (M0403) and possibly other Apple products.
Note: They are NOT the same as the AppleColor High-Resolution RGB Monitor (Mac) nor the AppleColor RGB Monitor (IIGS).
Used feet are sold individually only. The feet will need some kind of contact or spray adhesive to attach.
HDI-45 AV Monitor Adapter
HDI-45 to DB-15
This display adapter is used to connect a standard Apple display to the unique HDI-45 AV monitor port on the back of the following Macs: Power Macintosh 6100 Series , 7100 Series, 8100 Series, Performa 61XX Series, Workgroup Server 6150 Workgroup Server 8150.
590-0811 Internal hard drive and CD drive cable
Apple internal SCSI cable, 590-0811 for two devices (hard drive and CD drive), approximately 10″ long. Rev C and D are in stock. If you have a preference, please leave a note on the checkout page.
590-0566 Internal hard drive cable
Apple internal SCSI cable, 590-0566 for one device (hard drive), approximately 11″ long.
590-0837 or 590-0878 Internal hard drive and CD drive cable
Apple internal SCSI cable, 922-0804, (stamped 590-0878 or 590-0837) for two devices (hard drive and CD drive), approximately 22″ long. Original cable for Centris / Quadra 610 / 660, Performa 611x Series – 6110CD, 6112CD, 6115CD, 6116CD, 6117CD, 6118CD. Part number 922-1207 for Power Macintosh 6100 and Workgroup 6150.
590-0228 Internal hard drive cable
Apple internal SCSI cable, 590-0228 for one device (hard drive), approximately 3″ + long. There are Rev A and B in stock, if you have a preference, leave a note on the checkout page.
590-4528 Internal hard drive, CD drive and Zip drive cable
Apple internal SCSI cable, 922-1637, 590-4528 for three devices (hard drive, CD drive and Zip Drive), approximately 30″ long.
PowerMac 7200, 7300, 7500, 7600
590-0211 Internal hard drive cable
Apple internal 50 pin SCSI cable, 590-0211 for one device (hard drive), approximately 7″ long.
590-0609 Internal hard drive cable
Apple internal SCSI cable, 590-0609 for one device (hard drive), approximately 5″ long. I have Rev a and B in stock. If you have a preference, leave a note on the checkout page.
Stock on the IIcx, IIci and Quadra 700
M0487 ~ Mitsumi
Keycaps for the Apple Keyboard II. These key caps are only used on Version A of Apple Model M0487.
Identifiers: The underside of the cap has a square post with round hole, and looking at the keyboard, there is a rubber cap sandwiched between the cap and the round, white switch. Serial number of keyboard starts with an M, and if you have taken the cover off, controller board and inside of top are clearly marked Mitsumi. Please refer to the Apple Keyboard II Parts page for more information.
Due to the number of variations (all keys are listed here), all other keyboard parts including the rubber cups and wires that go under the caps are found on the Apple Keyboard II Parts page.
The key caps from this set have medium discoloration. Wires and cups do not come with the caps and they are found here.
M0487 ~ SMK
Keycaps for the Apple Keyboard II. These key caps are only used on Version B of Apple Model M0487.
Identifiers: The underside of the cap has a rectangular post and legs that stick down, and looking at the keyboard, there is a white rectangular switch with wings. Serial number of keyboard starts with an S (also maybe T), and if you have taken the cover off, controller board and inside of top are clearly marked SMK. Please refer to the Apple Keyboard II Parts page for more information.
Due to the number of variations (all keys are listed here), all other keyboard parts including the switches, space bar spring and wires that go under the caps are found on the Apple Keyboard II Parts page.
These keys have light discoloration. The lettering on the keys – e – s – d – are worn. Key caps only – the wires and clips that go under large keys such as shift, space bar, etc. Are found here.
Note: Some of the plastic legs or posts on the underside of some of the keys have been bent or broken off. This does not seem to affect functionality. If this is a concern, contact me about the specific keys you are interested in.
A classic for your Classic or LC.
Introduced with the Classic and the LC, the Apple Keyboard II, M0487 was the second ADB keyboard for the Macintosh. It features an ADB port on each side – one for the cable to the computer and the other is to plug the mouse into. There are two flip down feet or legs in the back.
This keyboard will work with any Mac from the Macintosh II through the Beige G3 as well as the Apple IIGS.
The Apple Keyboard II includes a matching Apple Desktop Bus Mouse and an Apple ADB keyboard cable. Coloring ranges from Nice, with little to no discoloration to Light to Medium and are priced accordingly.
As you can see by the photos, the keyboard you receive may or may not have a rainbow Apple in the top left corner and may have no label, a paper label, or a stamped label on the bottom.
Discount available If purchased with a computer.
Repair parts for the Apple Keyboard II, Model M0487.
While they look identical on the outside, there are two versions of this keyboard available and none of the parts are interchangeable. According to Apple, Version A serial numbers start with “M”. Version B serial numbers start with “S” or “T”.
According to what I have in inventory, Version A (M) would have been made by Mitsumi, and Version B (S) would have been made by SMK. No keyboards with a serial number starting with T are in stock, so unable to verify manufacturer or parts at this time.
Other identifying indicators of which keyboard you need the part(s) for are:
If you have already carefully removed the cover of the keyboard, the inside of the cover and the controller (encoder) board will be stamped “Mitsumi” or “SMK”.
If you remove a keycap, look both at the underside of the key and at the keyboard. the underside of Version A (M), Mitsumi, has a square post with a round hole in it. The corresponding switch on the keyboard has a round rubber cup or dome over a round white post.
The underside of a key cap of Version B (S), SMK, has legs at opposing corners and a rectangular post. A white, plastic switch may or may not have come up with the keycap. If it did, you will see a spring sticking out the end of the switch. Looking at the switch on the board, will either be a large, white switch sticking up with a rectangular hole and wings on each end or a large hole where this switch goes (if it is still attached to the cap).
All other keyboard parts including switches, screws, case parts, controller, backplate, feet, springs and the wire and clips found under the keycaps are selectable below.
- Case screws are sold in a set
- Backplate / controller board screws are sold in a set
- The SMK (Version B) controller board has several mounting screws – they will go with the board
- The power button goes with the top case
- The backplate / membrane module assembly includes ALL switches for Version A (M) and only the caps lock switch (finicky) for Version B (S).
These were complete, working keyboards, the bottom case was broken in version A (M) and a combination of worn keys, a finicky caps lock and the loss of a few wire clips while cleaning made Version B (S) a parts candidate.