Targus ACH81US User Manual

12

respond slowly while a graphic print job is printing or
while you are experiencing heavy network traffic.

We recommend the following guidelines:

• Do not transfer data to or from multiple high-speed

devices, such as a digital camera or scanner, at the
same time.

• If speed degradation does occur, close other programs

that use a USB device to improve device performance.

• Make sure that the device is fully inserted into the

correct port on the hub.

• Plug the device into a different port. If it still doesn’t

work, test the device by connecting it directly to your
computer.

• Verify that you ran the Setup or Install program for the

device.

• Make sure that the device appears in Device Manager.

For more information refer to “Verifying Devices are
Installed” on page 13.

• Disconnect all devices from the hub and reconnect

them, one at a time. Check that each device works
before plugging in the next one.

• Each USB port is equipped with over-current

protection. Should a USB device draw more current
than the USB port can supply, the port will shut down.