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ATX motherboard in dark grey with silver heatsinks and RGB lighting accents

ASUS

ASUS ROG STRIX B550-F GAMING WIFI II ATX AMD motherboard

SKU CH-E816-B8NKG

ATX motherboard for AMD Ryzen 3000 and 5000 series CPUs with DDR4 memory up to 128 GB, PCIe 4.0, dual M.2 slots, WiFi 6E, 2.5 Gb LAN and HDMI 2.1 output

  • ProcessorSupports AMD Ryzen 5000 / 3000 Series Processors* Supports A
  • ChipsetAMD B550
  • Form factorATX
  • CPU socketAM4
  • Memory slot count4 × 288pin (DDR4)
  • Supported memoryDDR4 5100(OC) / 4866(OC) / 4600(OC) / 4466(OC) / 4400(OC) /
  • Ready for AMD Ryzen 3000, 5000 and 4000 G-series processors with AM4 socket
  • PCIe 4.0-ready connectivity including dual M.2 slots, USB 3.2 Gen 2 Type-C, HDMI 2.1 and DisplayPort 1.2
  • Smooth networking via on-board WiFi 6E and Intel 2.5 Gb Ethernet with ASUS LANGuard
  • Robust power delivery from 12+2 teamed power stages, ProCool connector, alloy chokes and durable capacitors
  • Bundled 60-day AIDA64 Extreme subscription and intuitive UEFI BIOS dashboard for system tuning

AM4 Socket AMD B550 Motherboard

The ASUS ROG STRIX B550-F GAMING WIFI II is an ATX motherboard built for AMD Ryzen 3000 and 5000 series processors, plus 5000 and 4000 G-series chips. It uses the AMD B550 chipset and provides four 288-pin DDR4 slots supporting up to 128GB in dual-channel mode. On-board WiFi 6E and Intel 2.5 Gb Ethernet with LANGuard handle networking.

Straightforward ATX Install With BIOS Flashback

Standard ATX mounting points and a pre-installed I/O shield simplify the build. The ProCool power connector seats firmly and the 12+2 teamed power stages are clearly labelled. BIOS Flashback lets you update firmware without a CPU installed, which avoids the common issue of a new processor not posting on an older BIOS revision.

PCIe 4.0 From CPU And PCIe 3.0 From Chipset

The top PCIe x16 slot and the primary M.2 socket run at PCIe 4.0 x4 when a Ryzen 5000 or 3000 CPU is fitted. The second M.2 slot and the three PCIe x1 slots share PCIe 3.0 bandwidth from the chipset, so adding multiple devices can reduce available throughput. Six SATA 6Gb/s ports and USB 3.2 Gen 2 Type-C remain unaffected by this sharing.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $99.99
Cheaper than about 76% of the 1,906 comparable items (median $224.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameASUS
Product lineROG
Model nameSTRIX B550-F GAMING WIFI II
Processor
ProcessorSupports AMD Ryzen 5000 / 3000 Series Processors*
Supports AMD Ryzen 5000 / 4000 G-Series Processors*
* Refer to www.asus.com for CPU support list.
CPU socketAM4
ChipsetAMD B550
Memory
Memory slot count4 × 288pin (DDR4)
Supported memoryDDR4 5100(OC) / 4866(OC) / 4600(OC) / 4466(OC) / 4400(OC) / 4266(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3600(OC) / 3466(OC) / 3200 / 3000 / 2800 / 2666 / 2400 / 2133 (AMD Ryzen 5000 and 4000 G-Series Processors) *
DDR4 4800(OC) / 4666(OC) / 4600(OC) / 4400(OC) / 4266(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3400(OC) / 3200 / 3000 / 2933 / 2800 / 2666 / 2400 / 2133 (AMD Ryzen 5000 and 3000 Series Processors) *
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
Max supported RAM128 GB
Memory channelsDual Channel
ECC supportECC Memory (ECC mode) support varies by CPU.
BufferingUn-buffered
Storage
SATA ports6 x SATA 6Gb/s
M.2 slotsAMD Ryzen 5000 and 3000 Series / 5000 and 4000 G-Series Desktop Processors:
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes)
AMD B550 Chipset:
M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)*
* When the M.2_2 Slot is populated , SATA6G_5/6 ports will be disabled.
SATA and RAID support0/1/10
Graphics
Onboard video chipSupported only by CPU with integrated graphic
Audio & video
Audio chipROG SupremeFX High Definition Audio CODEC S1220A
Sound channels7.1 Channels
Connectivity
Ethernet controllerIntel I225-V
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 6E
802.11a/b/g/n/ac/ax
Bluetooth support5.2
Ports & slots
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16*
* Supports x4 mode.
* Share bandwidth with PCIe3.0 x1_1, PCIe3.0 x1_2, PCIe3.0 x1_3.
PCIe x1 slots3 x PCIe 3.0 x1
Onboard USB headers1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
2 x USB 2.0 headers support additional 4 USB 2.0 ports
Power
Power connectors1 × 24-pin EATX Power connector(s)
1 × 8-pin ATX 12 V Power connector(s)
1 × 4-pin ATX 12 V Power connector(s)
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 supportSupported
More details
LightingRGB

Questions about this item

How do I confirm the board is running correctly after build?

Power on and watch for the ROG logo on the HDMI 2.1 or DisplayPort 1.2 output; the UEFI BIOS dashboard will appear if the CPU and DDR4 memory are detected.

What comes in the box and what must I add?

The motherboard includes the WiFi 6E antenna, I/O shield, SATA cables and a 60-day AIDA64 Extreme subscription; you must supply an AM4 Ryzen CPU, DDR4 modules, storage drives and an ATX power supply.

Which M.2 slot should I use for a 2280 drive?

Use the M.2_1 slot (Key M) which accepts 2242, 2260, 2280 and 22110 lengths and runs at PCIe 4.0 x4; the second slot is limited to PCIe 3.0 x4 from the B550 chipset.

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