Technical Snapshot

The Gigabyte B550 UD AC is a ATX motherboard based on the B550 chipset for AMD AM4 processors. It supports DDR4 memory with up to 128 GB across 4 DIMM slots. Features include WiFi 5, and 1 M.2 slots.

Use Case
Desktop PC builds, gaming, workstation
Compatibility
AMD AM4 processors
Category
ATX Motherboard — B550 Chipset
GIGABYTE

B550 UD AC

B550 · AMD AM4 · ATX · DDR4 up to 128 GB

CPU socket: AMD AM4. Compatible with AMD Ryzen desktop processors.
SocketAMD AM4
Maximum supported memory: 128 GB DDR4 across 4 DIMM slots.
Max RAM128 GB
B550 chipset with PCIe and M.2 expansion slots.
ChipsetB550
ATX form factor — standard tower compatible.
Form FactorATX
MPNB550 UD AC
CategoryMotherboards
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Connectivity & Expansion

PCIe x165
M.2 Slots1
SATA Ports4
Wi-FiWiFi 5
BluetoothBT 5.0

Full Specifications

ChipsetB550
SocketAMD AM4
Form FactorATX
Memory TypeDDR4
DIMM Slots4
Max RAM128 GB
PCIe x16 Slots5
M.2 Slots1
SATA Ports4
Wi-FiWiFi 5
BluetoothBT 5.0
RGBYes
SeriesULTRA DURABLE

Support & Downloads

Latest Firmware & DriversVisit Gigabyte for the latest updates
Gigabyte Downloads →
Gigabyte B550 UD AC DocumentationPDF · Installation guide and specifications
Gigabyte Support →
← Back to Gigabyte Motherboard Catalog

Frequently Asked Questions

What socket does the Gigabyte B550 UD AC use?

The Gigabyte B550 UD AC uses the AMD AM4 socket, compatible with AMD Ryzen desktop processors.

How much RAM does the Gigabyte B550 UD AC support?

The Gigabyte B550 UD AC supports up to 128 GB of DDR4 memory across 4 DIMM slots.

Does the Gigabyte B550 UD AC have Wi-Fi?

Yes, the Gigabyte B550 UD AC features built-in WiFi 5 with Bluetooth BT 5.0.

How many M.2 slots does the Gigabyte B550 UD AC have?

The Gigabyte B550 UD AC has 1 M.2 slot for NVMe SSD storage.

What chipset does the Gigabyte B550 UD AC use?

The Gigabyte B550 UD AC is built on the B550 chipset, offering ATX form factor design for AMD platforms.

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