ASRock X300M-STX
Motherboard, from 2020 41 hardware reports
Memory
Up to 64 GB
2 laptop-size slots
SSD slots
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 64 GB seen working.
It takes DDR4-3200 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-3200 260-pin SO-DIMM
- Most seen working
- 64 GB in two or more machines
- Firmware says
- 128 GB maximum (often wrong, so we show what machines run)
- How sure
- 41 of 41 reports show this layout
See 32 GB DDR4-3200 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 41 hardware reports of this motherboard. Sources and method. Updated 9 Nov 2026.
2 laptop-size slots
Illustration Questions
Can I upgrade the RAM in the ASRock X300M-STX?
Yes. 2 slots, up to 64 GB seen working. It takes DDR4-3200 laptop-size sticks (SO-DIMM).
What type of RAM does the ASRock X300M-STX use?
DDR4-3200 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the ASRock X300M-STX take?
Machines in the reports run up to 64 GB. The firmware reports a maximum of 128 GB, a figure that is often wrong.
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 X300M-STX.