©Sealevel Systems, Inc.
270U Manual
15
SL9179 05/2012
The HUB7i is a generic USB hub and should provide years of trouble-free service. Should the
device appear to not be functioning correctly, the following tips can eliminate most common
problems without the need to call Technical Support.
1.
Make sure the power supply is connected to the hub and to a live AC power outlet. The
green LED on the front of the unit will light, indicating the hub is properly powered.
Inspect the power supply or call for a replacement if the green LED does not light after
connecting to power.
2.
Make sure the hub is connected to a USB port using the included USB cable or a quality
replacement USB cable. The yellow LED will light when the hub is successfully
communicating with the host system.
3.
The hub is supported in any USB aware operating system that supports generic USB hub
devices, including Windows 98/ME/2000/XP/Vista/7™ operating systems and Linux
(kernel v2.4 or better). No additional drivers are required. Verify that USB support is
enabled in the host system BIOS and the hub is functioning properly in the operating
system. You can verify the hub is working properly in Windows using Device Manager.
4.
If the red LED lights, there is a fault condition with one of the downstream USB ports.
Disconnect your USB peripherals one at a time until the red LED goes out. Inspect the
problem USB peripheral and replace, if necessary. Try connecting a different USB
peripheral to the problem port. If the red LED lights on the same USB port with a
different device, contact technical support for further assistance.
