Adaptec XHub4 User Guide - Page 18

Understanding the LEDs Understanding the LEDs Your XHub for Notebooks has 6 colored LEDs to help you monitor the status of your XHub and USB devices. Refer to the figure below for the location of each LED. 1 2 3 4 Power LED USB Uplink LED USB Device LEDs ■ The red Power LED indicates that the XHub is connected to a power source and that the power is on. ■ The green USB Uplink LED indicates that the XHub is properly connected to a USB port on your computer, and that a USB 2.0 driver (version 3.0 or later) is installed. (See Installing Drivers on page 5 for more information.) ■ The four USB Device LEDs (numbered 1 through 4) indicate the status of the four USB ports on your XHub (numbered 1 through 4). When a Device LED is illuminated, a USB device is connected to the corresponding USB port. 9