ASRock B550M Pro4, AMD B550 motherboard - socket AM4 [90-MXBDK0-A0UAYZ]

B550 mainboards support all the features of the Ryzen processors of the third and fourth generation, especially the PCI Express standard in version 4.0 (PCIe 4.0). PCIe 4.0 is backward compatible and can be used with all expansion cards from previous generations. In addition, the mainboards support up to 128 GB of RAM with a guaranteed clock speed of 3200 megahertz. With overclocking, much higher clock rates are possible depending on the mainboard. The B550 chipset also enables the processor to be overclocked.

The features of the ASRock B550M Pro4 at a glance:

1x PCIe 4.0 x16 (x16) and 1x PCIe 3.0 x16 (x4)
1x USB 3.1 Type A / 1x USB 3.1 Type C (1x external) / 6x USB 3.0 / 6x USB 2.0
2x M.2 (1x PCIe 4.0 x4 / 1x PCIe 3.0 x2 & SATA) / 6x SATA 6G
DDR4 memory up to 4533 MHz using OC
Ready for AMD Ryzen 3000 processors
RGB header with ASRock Polychrome Sync

The equipment of the ASRock B550M Pro4 in detail:
The ASRock B550M Pro4 is a micro ATX motherboard and has a PCI Express 4.0 slot with full x16 connection plus a PCI Express 3.0 x16 slot with four lanes for graphics cards. The motherboard provides a PCIe 3.0 x1 slot for additional expansion cards. The four RAM banks support up to 128 GB DDR4 RAM with a clock rate of up to 3200 megahertz and can even handle clock rates up to 4533 MHz via OC.

The AM4 motherboard provides two M.2 slots. One of the slots is connected with four PCI Express 4.0 lanes, accepts plug-in cards up to 80 mm (2280) and achieves a maximum data transfer rate of 64 Gbit / s. The second M.2 slot is connected with two PCI Express 3.0 lanes, accepts plug-in cards up to 80 millimeters in length (2280) and reaches a maximum of 16 Gbit / s. M.2 SSDs with SATA connection are also supported here. In addition, the ASRock B550M Pro4 provides six SATA 6G connectors.

Modern connections and RGB LED headers
The ASRock B550M Pro4 provides a USB 3.1 port with a Type-C socket, four USB 3.0 ports with a Type-A socket (blue) and a USB 3.1 Type-A port on the I / O panel. Connection and two USB 2.0 ports ready. The USB Type-C port can be plugged in on both sides, is particularly thin, and USB ports with this standard generally support the quick-charge function of smartphones and tablets. USB 3.1 reaches maximum speeds of 10 Gbit / s per port. An HDMI, a DisplayPort and a VGA connection are available for CPUs with an integrated graphics unit such as AMD's Picasso APUs.

Furthermore, this B550 mainboard offers features such as a Gigabit LAN port (Realtek RTL8111H), on-board sound (Realtek ALC1200 Audio Codec), a reinforced PCIe-x16 slot and numerous internal headers.

A special feature of the ASRock B550M Pro4 is the ability to connect RGB accessories and synchronize them using the manufacturer's software. The mainboard has two 4-pin RGB headers and two 3-pin RGB headers. Furthermore, six fans can be connected directly to the board.

Technical details:

format
- Micro-ATX (244 x 244 mm)
- Chipset
- AMD B550
- Base:
- AM4 (for Matisse / Picasso)
- R.A.M:
- 4x DDR4 (max. 3200 MHz, 4533 in the OC)
- Dual channel
- Max. 128 GB
- Slots:
- 1x PCIe 4.0 x16 (x16)
- 1x PCIe 3.0 x16 (electrical x4)
- Multi-GPU configurations: 2-way AMD CrossFire
- 1x PCIe 3.0 (electrical x1)
Internal connections:
- 6x SATA 6G (RAID 0, 1, 10)
- 1x M.2 (M-Key, PCIe 4.0 x4 with max. 64 Gbit / s, size 2280)
- 1x M.2 (M-Key, PCIe 3.0 x2 with max. 16 Gbit / s & SATA 6G, size 2280)
- 1x M.2 (E-Key, for an optionally available WLAN module)
- 2x USB 3.0 (USB 3.2 Gen 1, one header)
- 4x USB 2.0 (two headers)
- 1x power LED and speaker header
- 1x front panel audio connector
- 1x COM port header
- 1x SPI-TPM header
- Fan header:
- 1x CPU fan (4-pin PWM)
- 1x CPU cooler / pump (4-pin PWM)
- 4x chassis fan (4-pin PWM)
- RGB header:
- 2x 4-pin RGB headers (12VGRB)
- 2x 3-pin RGB headers (5VDG)
External connections:
- 1x PS / 2 for mouse / keyboard
- 1x USB 3.1 Type C (USB 3.2 Gen 2, max. 10 Gbit / s)
- 1x USB 3.1 Type A (USB 3.2 Gen 2, max. 10 Gbit / s)
- 4x USB 3.0 Type A (USB 3.2 Gen 1, max. 5 Gbit / s)
- 2x USB 2.0 type A (max. 480 Mbit / s)
- 1x Gigabit LAN (Realtek RTL8111H)
- 1x HDMI 2.1
- 1x DisplayPort 1.4
- 1x VGA
- 3x 3.5 mm jack (Realtek ALC1200)
- Power supply:
- 1x 24-pin ATX12V
 -1x 8-pin ATX12V
Scope of delivery:
- 1x mainboard
- 1x I / O shield
- 1x quick start guide
- 1x CD with drivers and utilities
- - 2x SATA data cable
- 2x screws for M.2 base