System Memory; Recommended Memory Configurations - Asus P8H77-M PRO User Manual

2.2.3

System memory

The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) slots.
A DDR3 module is notched differently from a DDR or DDR2 module. DO NOT install a DDR
or DDR2 memory module to the DDR3 slot.
P8H77-M PRO
P8H77-M PRO 240-pin DDR3 DIMM sockets

Recommended memory configurations

We recommend that you install the memory modules from the blue slots for better
overclocking capability.
ASUS P8H77-M PRO
2-5