Those adapters are passive connecters. Some USB mice made my microsoft and
Logitech (I have those brands of USB optical mice) have both ps2 and usb
logic built into them and the software drivers. Same thing with the PS2 to
serial adapaters ( have a few with Logitech cordless keyboard and mice
package). If you try connecting a ps2 mouse that isnt serial compatible to a
serial port you get all kinds of crazy things. I have seen KVM switches that
have ps2 and serial connections for mice but specifically state you can use
one OR the other but not both types at the same time.
----- Original Message -----
From: "John Honniball" <coredump(a)gifford.co.uk>
To: <cctalk(a)classiccmp.org>
Sent: Sunday, February 09, 2003 10:07 AM
Subject: Re: PS2 Mouse
Ian Primus wrote:
I have one of those, it came with my Microsoft
USB Optical Intellimouse.
I don't know if it will work with other mice or not though, but it works
fine with the mouse it came with, and I use it on my SGI Indigo2.
I have one of those for my Logitech trackball. However, I don't think
they are general-purpose USB-to-PS/2 adaptors. Such a device would
require quite a bit of intelligence and probably wouln't fit in the
very small adaptor. More likely, those adaptors are passive connector
adaptors that also signal back to the mouse (or trackball or whatever).
When the mouse starts up, it detects the adaptor and changes the
behaviour of the interface accordingly.
Does anybody know for sure?
--
John Honniball
coredump(a)gifford.co.uk