David Wilson wrote:
For example, on http://www.inetdaemon.com/tutorials/wan/serial/eia/eia232.shtml it states that PS/2 keyboard and mouse sockets use EIA232 which came as a surprise to me - I thought they were TTL with +5V to GND voltage range...
There are adapters (that look like they're passive) for using serial mice at PS/2 ports or vice versa.
-- Linards Ticmanis