If its really number of USB devices, directly connected to the PC, then
it could be issue with overload of 5V bus on USB hub. It has certain
limitation.
As a workaround, you could try to use external USB hub with its own PSU.
--
WBW,
V.P.
On 2015-05-29 15:17, Cash Olsen wrote:
I have been plagued with hard crashes of the computer when plugging in
and
unplugging USB devices. I have generally determined that some of the
USB to
serial devices are the worst offenders. I am also suspicious of some of
the
hubs. I wander if even the operating system is partly to blame.
I'm using Windows Vista, and have several different USB to serial
adapters.
Most are Silicon Labs and Prolific. I thought I had the problem
resolved
with Prolific by over-riding the driver and installing an earlier
version
but Windows may have updated the driver, that seems to be a common
problem.
I'm coming to time-nuts because I remember that at least one member had
a
very large number of adapters on one computer, so I'm hoping to find
some
help. I don't generally seem to have trouble with other USB devices,
just
the serial adapters.
One further issue, the COM ports are marked in use from 3 to 50+ and
I'm
only using at any one time 3 or 4. Can I clean up the assignments and
can I
make the assignments static after connect and reconnect or restarting
the
computer?
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