ASRock H61M/U3S3
Motherboard, from 2011 6 hardware reports
Memory
Up to 16 GB
2 full-size slots
SSD slots
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 16 GB seen working.
It takes DDR3-1066 full-size sticks (DIMM).
- Slots
- 2 DIMM slots
- Type
- DDR3-1066 240-pin DIMM
- Most seen working
- 16 GB in two or more machines
- Firmware says
- 16 GB maximum
- How sure
- 6 of 6 reports show this layout
See 8 GB DDR3-1066 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 6 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 H61M/U3S3?
Yes. 2 slots, up to 16 GB seen working. It takes DDR3-1066 full-size sticks (DIMM).
What type of RAM does the ASRock H61M/U3S3 use?
DDR3-1066 full-size sticks (DIMM, 240-pin).
How much RAM can the ASRock H61M/U3S3 take?
Machines in the reports run up to 16 GB. That matches the 16 GB maximum the firmware reports.
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 H61M/U3S3.