USB Keyboard Does Not Work When Connected to a Rear Port of Dell PowerEdge 2950 Server

Error :

With the ESXi 3.5 Installable version on a Dell PowerEdge 2950 server running BIOS version 2.2.6, the PowerEdge server does not accept inputs from a USB keyboard.

Solution:

Connect the keyboard to one of the USB ports at the front of the PowerEdge server.