Acer AB460 F1 - Manual (Page 284)

4 Networking Switch Modules 264
Note: After the module has been installed and the handle locked,
it will turn on and a POST test will run to verify it is working
properly. If there are no problems the blue
Init. OK LED on the
module will illuminate and you will see an OK under I NITIATED in
the G B E S WITCH screen of the management software utility.
Note: If the module is installed in a top bay it must be positioned
upside-down.
Removing a Switch Module
1. Pull out the release handle to the open position.
2. Pull the module out of the bay.
3. Replace immediately with another module or with a dummy
module cover to maintain airflow integrity.