ASRock B660M-HDV
Motherboard, from 2021 3 hardware reports
Memory
Up to 64 GB
2 full-size slots
SSD
2+ M.2
At least 2 M.2 SSD slots
SSD length
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 64 GB seen working.
It takes DDR4-2666 full-size sticks (DIMM).
- Slots
- 2 DIMM slots
- Type
- DDR4-2666 288-pin DIMM
- Most seen working
- 64 GB; one machine runs 64 GB
- Firmware says
- 64 GB maximum
- SSD slots
- At least 2 M.2 SSD slots listed by the firmware
- How sure
- 3 of 3 reports show this layout
See 32 GB DDR4-2666 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 3 hardware reports of this motherboard. Sources and method. Updated 9 Nov 2026.
2 full-size slots
Illustration Questions
Can I upgrade the RAM in the ASRock B660M-HDV?
Yes. 2 slots, up to 64 GB seen working. It takes DDR4-2666 full-size sticks (DIMM).
What type of RAM does the ASRock B660M-HDV use?
DDR4-2666 full-size sticks (DIMM, 288-pin).
Does the ASRock B660M-HDV have an M.2 SSD slot?
Yes. The firmware lists at least 2 M.2 SSD slots, in 3 reports. Some firmware leaves a slot out, so there may be more.
Is this my motherboard?
The model name is printed on the board, usually between the memory slots or near the CPU socket. In Windows, open System Information and look at "BaseBoard Product"; it should read B660M-HDV.