ASRock Z390 Pro4
Motherboard, from 2018 15 hardware reports
Memory
Up to 64 GB
4 full-size slots
SSD
3+ M.2
At least 3 M.2 SSD slots
SSD length
Coming next
Checked from separate sources
Upgradable
Yes. 4 slots, up to 64 GB seen working.
It takes DDR4-2400 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR4-2400 288-pin DIMM
- Most seen working
- 64 GB in two or more machines
- Firmware says
- 64 GB maximum
- SSD slots
- At least 3 M.2 SSD slots listed by the firmware
- How sure
- 15 of 15 reports show this layout
See 16 GB DDR4-2400 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 15 hardware reports of this motherboard. Sources and method. Updated 9 Nov 2026.
4 full-size slots
Illustration Questions
Can I upgrade the RAM in the ASRock Z390 Pro4?
Yes. 4 slots, up to 64 GB seen working. It takes DDR4-2400 full-size sticks (DIMM).
What type of RAM does the ASRock Z390 Pro4 use?
DDR4-2400 full-size sticks (DIMM, 288-pin).
How much RAM can the ASRock Z390 Pro4 take?
Machines in the reports run up to 64 GB. That matches the 64 GB maximum the firmware reports.
Does the ASRock Z390 Pro4 have an M.2 SSD slot?
Yes. The firmware lists at least 3 M.2 SSD slots, in 15 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 Z390 Pro4.