Get a/c power from computer
Hooded or shrouded power cables are usually used on a monitor. One end pugs into the monitor, the other end gets power from the computer. Usable on any computer with power in and power out ports. Also can be used as an extension to your power cable. Available with a straight plug or with an elbow or angled end. Color and length will vary.
Free if you need one for your computer, monitor, printer or external hard drive purchase.