Installing Memory Modules (Dimm) - ASROCK AB350 Pro4 User Manual

2.3 Installing Memory Modules (DIMM)

This motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,
and supports Dual Channel Memory Technology.
1. For dual channel configuration, you always need to install identical (the same
2. It is unable to activate Dual Channel Memory Technology with only one or three
3. It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4
DDR4 UDIMM Maximum Frequency Support
A-Series APUs:
UDIMM Memory Slot
A1 A2
- SR
- DR
- SR
- DR
SR SR
SR/DR DR
Ryzen CPUs:
UDIMM Memory Slot
A1 A2
- SR
- DR
- SR
- DR
SR SR
SR/DR DR
SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label
DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label
22
brand, speed, size and chip-type) DDR4 DIMM pairs.
memory module installed.
slot; otherwise, this motherboard and DIMM may be damaged.
B1 B2
- -
- -
- SR
- DR
SR SR
SR/DR DR
B1 B2
- -
- -
- SR
- DR
SR SR
SR/DR DR
Frequency
(Mhz)
2400
2400
2400
2133
1866
1866
Frequency
(Mhz)
2667
2667
2667
2400-2667
2133-2400
1866-2133