Asus Xeon 5U Rackmount Server AP1720-E1 - Manual (Page 20)

Chapter 2: Hardware setup 2-4
2.2 Motherboard information
The barebone server comes with the ASUS PC-DL Deluxe motherboard
already installed. The motherboard is secured to the chassis by nine (9)
screws as indicated by circles in the illustration below.
Make sure to unplug the power cord before installing or removing any
motherboard component or connection. Failure to do so may cause
you physical injury and may damage motherboard components.
Refer to the motherboard user guide for detailed information on the
motherboard.
This side towards
the rear of the chassis