HP ProLiant BL20p G4 Server-Blade - Manual (Page 8)

Component identification 8
Item Description Status
9 Drive activity Green = Active online condition
Off = Inactive online condition
* Actual NIC numeration depends on several factors, including the operating system installed on the server blade.
Rear panel components
Item Description
1 Power connector
2 Signal connector
SAS and SATA hard drive LEDs