Asus 1U Rackmount Chassis Kit R10-A2P4 - Manual (Page 20)

Chapter 2: Hardware setup 2-8
5. Match the motherboard holes with
the chassis standoffs.
6. Secure the motherboard with
screws. Refer to the motherboard
user guide for the specific number
of screws that you need to use.
4. Fit the rear panel connectors to
the I/O shield openings on the
chassis rear.
The chassis appears as shown
with the motherboard installed.
Refer to the motherboard user guide for instructions on installing CPU,
heatsink, and system memory.