Asus AP2400R - Manual (Page 22)

22 Chapter 3: Hardware Setup
Opening the Chassis Cover
The AP2400R chassis is a 2U form factor designed for easy assembly
and disassembly, making the installation of internal components very
convenient. At the top of the chassis is a rotating lock that secures
the cover to the chassis.
The top cover of the chassis has locking tabs at the rear end that
connect to the inner side of the back panel. Make sure to disengage
the locking tabs before lifting up the cover.
CAUTION
Removing the Cover
Slide the top cover toward the front for about an inch, then lift it from the
chassis.
Unlocking the Cover
To unlock the cover, turn the rotating lock clockwise until the triangle mark
points to OPEN.
Rotating Lock
OPEN
Triangle Mark
CLOSE