Impulse 270U - Manual (Page 12)

Appendix A - Troubleshooting
The SeaI/O-270U 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 be lit, 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
quality replacement USB cable. The yellow LED will be lit when the hub is
properly enumerated by the operating 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™ operating
systems and Linux (kernel v2.4 or better). Check to make sure that USB support
is enabled in the System BIOS and it is functioning properly in the operating
system. This can be done by using Device Manager in Windows.
4. If the red LED lights, there is a fault condition with one of the downstream USB
ports. Disconnect your USB peripherals until the red LED goes out. Inspect the
problem USB peripheral and replace, if necessary. Try switching another USB
peripheral to the problem port. If the red LED lights on the same port with a
different USB device, contact technical support for further assistance.
If these steps do not solve your problem, please call Sealevel Systems’ Technical
Support, (864) 843-4343. Our technical support is free and available from 8:00 AM
to 5:00 PM Eastern Time Monday through Friday. For email support contact
[email protected] .
© Sealevel Systems, Inc. - 10 - SeaI/O-270U User Manual