Low-Power ADB?

[Mac128]

The PowerBook 100 & Portable documentation warns of using only low-power ADB devices. I've seen the low-power ADB mice that have the circle with the line across the top logo on them indicating low power, but what about keyboards? While Apple support archive lists the low-power mouse numerous times, they don't ever discuss a low-power keyboard.

Are all keyboards low-power or did Apple never feel the need to make one? Given one of the complaints about the PB 100 having an undersized keyboard, I would think a full sized-keyboard would have been a popular option. At a bare minimum a keypad. I know I used my PowerBook Duo this way all the time ...

Besides shortened battery life what would be the worst that could happen? Some things I've read seemed to indicate I could overload the circuitry. What happens if I plug a standard keyboard and mouse into it?

 

[bigD]

I've plugged a keyboard (Apple Extended II) and mouse into my PB 100 with no problems at all. You should be fine.

 

[wally]

I too have seen a warning with respect to the Mac Portable ADB, something in the Guide to the Macintosh Family Hardware about "could cause an unacceptable decrease in the +5 volt supply voltage and result in improper operation", but I have not seen a power spec.

I remember measuring and marking the draw on what I had years ago for mobile use with my Blackbirds but much of this has been given away. I do have:

an Apple Keyboard M0116 marked 55 mA

an Apple Extended Keyboard II M3501 marked 4.53 mA, (even without having any round symbol with the flat top on it, this looks pretty low power to me!)

an old wedge shaped A9M0331 mouse marked 73 mA,

two Apple wedge shaped G5431mice with round symbol marked 4.70 and 5.11mA.

 

[wally]

Some additional measurements made today (current drain just powered up, no attempt to run software):

two oval Apple Desktop Bus Mouse II M2706: 2.87 mA, 4.73 mA

Kensington NoteBook (numeric) KeyPad 3.1 mA

Wacom ArtZ Graphics Tablet UD-0608-A spec is .1A, measured 90 mA

three Connectix Color QuickCam: 162 mA, 165 mA, 219 mA