"Chuck Tribolet" wrote in message
...
USB memory looks like an ATA disk drive to the system. Disk drives can
read back their
serial numbers. Look for the interface to get this info from a disk
drive. It will be
different for each operating system. The way the drives give back their
serial numbers
is different for SCSI and ATA, but probably the same at the operating
system
level.

Every USB device has a uniqe serial number, which has nothing to do with the
serial number of the presented disk. Even a serial-USB dongle has one,
otherwise Windows coould not see the difference between two units plugged in
at the same time, they would both get the same COM port number without
unique serial number.

Meindert