"Mike Paff" wrote in message
...
On Tue, 19 Apr 2016 19:22:43 +0100, "Ian Field"
wrote:

Recently, my Logitech mouse went tits-up and took the entire motherboard
USB
subsystem with it!

The MOBO is still useable, but sometimes there's weird "artifacts" on the
video. A USB expansion card has solved the interface deficiency.

My question is; are Logitech mouse notorious for this failure mode?

I went through a lot of USB optical wheel mouse that I didn't like, then I
got the Logitech which was OK - till this happened.

Thanks for any help.

Maybe a short developed in the mouse cable. If the motherboard
doesn't have a polyfuse on the USB +5V line (many cheap ones don't),
a short could burn out the trace and take out the USB subsystem.

Did you have the mouse cable routed in a way that could lead to
it getting abraded, pinched, or repeatedly bent sharply?

Inspection shows the cable in good condition, but I've been too busy to
remove it and test it electrically.

The board is an MSI with an Intel 945 of some description (there seems to be
endless variants).

Somewhere I have an MSI; MS7204 (AKA 945P). But it has a huge CPU cooler
that overhangs the edge of the board and won't fit a case with any drive
bays.

The 945 (something or other) has a regular cooler - the one on the 945P has
lots of fins with copper pipes running through them. No idea whether they're
interchangable, but I'm not optimistic.