Gigabyte B550 UD AC
Motherboard, from 2021 2 hardware reports
Memory
Up to 32 GB
4 full-size slots
SSD
1+ M.2
At least 1 M.2 SSD slot
SSD length
Coming next
Checked from separate sources
Only 2 machines reported so far, so this answer rests on few examples. Check the label or open the panel before you buy.
Upgradable
Yes. 4 slots, up to 32 GB seen working.
It takes DDR4-2400 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR4-2400 288-pin DIMM
- Most seen working
- 32 GB; one machine runs 32 GB
- Firmware says
- 128 GB maximum
- SSD slots
- At least 1 M.2 SSD slot listed by the firmware
- How sure
- 2 of 2 reports show this layout
See 8 GB DDR4-2400 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 2 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 Gigabyte B550 UD AC?
Yes. 4 slots, up to 32 GB seen working. It takes DDR4-2400 full-size sticks (DIMM).
What type of RAM does the Gigabyte B550 UD AC use?
DDR4-2400 full-size sticks (DIMM, 288-pin).
Does the Gigabyte B550 UD AC have an M.2 SSD slot?
Yes. The firmware lists at least 1 M.2 SSD slot, in 2 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 B550 UD AC.