5volt line? tap off harddrive/ PS2 /kybd?
Anybody know/try to tap off the PS2 port or keyboard port or even the harddrive power plug for a 5v tap to power a usbhub? Im trying to contain the entire power system to the cpu unit only... I have a micro size HP-epc unit PIII933 system all integrted.. the cdrom is of laptop size and powers off the ribbon cable plug, but it does have one harddrive power plug to power the 3.5 size harddrive, also im using a usb powered keyboard with biultin trackpoint, so im not using the ps2 port nor the keyboard port. I would like to have a 5volt tap for my usb hub, and also a tap for my external (laptop size/type) dvdrom unit which is also 5v (uses a 5v/1amp transformer), also the hub uses a 5v/2amp transformer. I dont believe the amp ratings are nessessary only higher then need as with all devices. any suggestions would be nice. BTW- the computer system was designed like a laptop it use 19v/3.1 amp transformer, which i have a 12vuniversal laptop PSU which works nicely on it.
any ideas on the possibilities?