Macintosh 128K 512K Plus CRT Socket Cable Apple Rescue of Denver » Products Page » Macintosh to PowerPC » Cables & Adapters (Macintosh) » Internal Cables & Adapters (Macintosh) » Macintosh 128K 512K Plus CRT Socket Cable Power Supply to CRT Apple 590-0160. CRT Socket Cable for the Mac 128K, 512K and Plus. Product in stock Price: $20.00 Updating cart... Updating...