Changing the LCD contrast
You can change the contrast so the display is viewable from different angles. For example, if the management module is located in a hub at the top of a rack.
•Make sure the Main menu is displayed with the Stats item flashing.
–To darken: Press the Esc button for five seconds to enter contrast mode. Keep pressing until the display turns darker.
–To lighten: Press the left arrow button for five seconds to enter contrast mode. Keep pressing until the display turns lighter.
Viewing statistics
From the Stats menu, select the stat type, Domain or Port. Press 
Domain
1Collisions & usage per second appears. Press 
to display the following graph. If there are two collision domains (10 and 100
Mbps hubs in the same stack) two graphs will be displayed.
Top bar shows collisions per second
collisions/usage
100Mb 
Bottom bar shows % utilization
Each segment represents a value of 10 (each pixel within a segment is a value of 2). In this example, the 100 Mbps collision domain is 34% utilized and the collision count is 16 collisions per second.
2Press any key to return to the Main menu.
Port
1Use the arrow keys to select the hub (from 1 to 8). Press
2Use the arrow keys to select the port number (1 to 12 or 1 to 24). Press 
10
