USB keyboard w/ PS2 adapter not getting reconized

[ripken204]

PS/2 mice and keyboards have different pinouts... That's why you can only plug them into their specified ports on the back of your computer. Same goes for those little PS/2 adapters. There are ones made specifically for mice (green) and ones made specifically for keyboards (purple/blue)!

yet they can still plug into any port?

[LLXX]

First of all, what adapters are you talking about?

There are "true" adapters, which have USB interface circuitry inside, and there are the adapters for use with dual-mode devices only, which do not contain ANY circuitry.

Pinouts are the same for PS/2 mouse and keyboard; see

http://pinouts.ru/data/KeyboardPC6_pinout.shtml

compare with

http://pinouts.ru/data/PS2Mouse_pinout.shtml

And this is the wiring of the dual-mode adapter - notice how data+/data- become data/clock in two modes:

http://pinouts.ru/InputCables/usb_ps2_mouse_pinout.shtml

The mouse can operate in either USB or PS/2 mode by sensing the signals recieved

[navipta]

Using a USB leyboard with a PS2 adapter (not to tie up a USB port), the system doesn't reconize the keyboard. It does with a USB mouse using a PS2 adapter. It is a Compaq keyboard if that matters.

I will try the keyboard on another box when I can and try the other adapter also. In the mean time any ideas?

Install USB 2.0 drivers and then try to install ur hardware part...

thanx

Navdeep

[videobruce]

If it is hooked to a PS2 port, why would you install USB drivers??

[puntoMX]

navipta, Welcome to the forums although you missed the question here .

videobruce, navipta is new here en he didn’t read the question well...