User's Manual

UMAC Turbo CPU/Communications Board Hardware Manual
USB Software Setup 25
If Delta Tau UMAC USB 2.0 Device is not on the list, the device driver has not been installed. If there is
a red x through that line or a yellow exclamation point through that line, then Windows had a problem
installing the device.
The appropriate trouble-shooting steps are:
1. Reboot the computer and examine this list again.
2. If that does not work, ensure that pmacusb.sys is in the Windows\system32\Drivers directory.
3. If this is true, when using an older computer, check with the manufacturer to make sure that there is
not an update to the BIOS to enable USB on the PC.
4. If the Universal Serial Bus Controllers in the device manager dialog box are not on the list, make sure
that it is enabled in the BIOS of the computer.