In message .com, Adam
Aglionby writes
Simple answer would appear to be to modify a desk lamp with LEDs and
take 12V power from the computer PSU.Disadvantage of light shutting
down with computer. Or hack the UPS to obtain low voltage D.C. source
from internal batteries.

Or use the handy 5V supply from any USB port to power a small cluster of
LEDs?

--
Clive Mitchell
http:/www.bigclive.com