ASRock B550M Pro SE features dual NVME slots, primary Gen4x4 NVME and Gen4 PCI-E x16 with ARGB as well as RGB sync headers. This board comes with 8 power phases and in mATX form factor having white color scheme.

ASRock B550M-Pro SE Specifications:

• Unique Feature
  Rock-Solid Durability
  – 8 Power Phase
  – Pre-Installed I/O Shield Ultrafast Connectivity
  – 2.5G LAN
• CPU

  – Supports AMD AM4 Socket Ryzen™ 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series Desktop Processors*

  *Please refer to CPU support list for details.
• Chipset
  – AMD PRO565
• Memory
  – Dual Channel DDR4 Memory Technology
  – 4 x DDR4 DIMM Slots
  – AMD Ryzen series CPUs (Vermeer) support DDR4 4533+(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
  – AMD Ryzen series CPUs (Matisse) support DDR4 4533+(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
  – AMD Ryzen series APUs (Cezanne) support DDR4 4733+(OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
  – AMD Ryzen series APUs (Renoir) support DDR4 4733+(OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
  – AMD Ryzen series APUs (Picasso) support DDR4 3333+(OC) / 3200(OC) / 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory*
  – Max. capacity of system memory: 128GB*
  – Supports Extreme Memory Profile (XMP) memory modules

  * For Ryzen Series APUs (Picasso, Cezanne and Renoir), ECC is only supported with PRO CPUs.
  Please refer to below table for AMD non-XMP memory frequency support. For more details, please refer to the QVL on ASRock’s website.Ryzen Series CPUs (Vermeer):
  

  Ryzen Series CPUs (Matisse):
  

  Ryzen Series APUs (Cezanne):
  

  Ryzen Series APUs (Renoir):
  

  Ryzen Series APUs (Picasso):
  

  SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label
  DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label

• BIOS
  – 128Mb AMI UEFI Legal BIOS with GUI support
• Graphics
  Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU* (Actual support may vary by CPU)
  – 1 x HDMI 2.1, supports HDR, HDCP 2.3, 4K Ultra HD (UHD) playback and max. resolution up to 4K 60Hz*
  – 1 x DisplayPort 1.4, supports HDCP 2.3, 4K Ultra HD (UHD) playback and max. resolution up to 5K 120Hz

  *Picasso supports HDCP 2.2 with HDMI 2.0 Port
• Audio
  – 7.1 CH HD Audio (Realtek ALC897 Audio Codec)
• LAN
  – 2.5 Gigabit LAN 10/100/1000/2500 Mb/s
  – Dragon RTL8125BG
  – Supports Dragon 2.5G LAN Software
  – Smart Auto Adjust Bandwidth Control
  – Visual User Friendly UI
  – Visual Network Usage Statistics
  – Optimized Default Setting for Game, Browser, and Streaming Modes
  – User Customized Priority Control
• Slots
  AMD Ryzen series CPUs (Vermeer and Matisse)
  – 2 x PCIe x16 Slots (PCIE1: Gen4x16 mode; PCIE3: Gen3 x4 mode)*
  AMD Ryzen series APUs (Cezanne and Renoir)
  – 2 x PCIe x16 Slots (PCIE1: Gen3x16 mode; PCIE3: Gen3 x4 mode)*
  AMD Ryzen series APUs (Picasso)
  – 2 x PCIe x16 Slots (PCIE1: Gen3x8 mode; PCIE3: Gen3 x4 mode)*
  – Supports AMD CrossFire™
  – 1 x PCIe 3.0 x1 Slot (PCIE2: x1 mode)

  * Supports NVMe SSD as boot disks
• Storage
  CPU:
  – 1 x Hyper M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode (with Vermeer, Matisse) or Gen3x4 (32 Gb/s) mode (with Cezanne, Renoir and Picasso)*
  Chipset:
  – 1 x M.2 Socket (M2_2, Key M), supports type 2280 SATA3 6.0 Gb/s & PCIe Gen3x2 (16 Gb/s) modes*
  – 4 x SATA3 6.0 Gb/s Connectors

  * Supports NVMe SSD as boot disks
  NVMe SSD is not supported with AMD Athlon™ 3000G Processors
• RAID
  – Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices
• USB
  – 6 x USB 3.2 Gen1 Type-A (4 Rear, 2 Front)
  – 6 x USB 2.0 (2 Rear, 4 Front)

  * All USB ports support ESD Protection
• Connector
  – 1 x SPI TPM Header
  – 1 x Power LED and Speaker Header
  – 2 x RGB LED Headers*
  – 2 x Addressable LED Headers**
  – 1 x CPU Fan Connector (4-pin)***
  – 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)****
  – 1 x 24 pin ATX Power Connector
  – 1 x 8 pin 12V Power Connector
  – 1 x Front Panel Audio Connector
  – 2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
  – 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)

  * Support in total up to 12V/3A, 36W LED Strip
  ** Support in total up to 5V/3A, 15W LED Strip
  *** CPU_FAN1 supports the fan power up to 1A (12W).
  **** CHA_FAN1~3/WP support the fan power up to 2A (24W).
  CHA_FAN1~3/WP can auto detect if 3-pin or 4-pin fan is in use.
• Rear Panel I/O
  – 1 x PS/2 Mouse/Keyboard Port
  – 1 x HDMI Port
  – 1 x DisplayPort 1.4
  – 4 x USB 3.2 Gen1 Ports
  – 2 x USB 2.0 Ports
  – 1 x RJ-45 LAN Port with LED
  – HD Audio Jacks: Line in / Front Speaker / Microphone
• Software and UEFI
  Software
  – ASRock Motherboard Utility (A-Tuning)
  – ASRock Dragon 2.5G LAN Software
  – ASRock Polychrome SYNC*
  UEFI
  – ASRock Full HD UEFI
  – ASRock Instant Flash

  *These utilities can be downloaded from ASRock Live Update & APP Shop.
• Accessories
  – 1 x User Manual
  – 2 x SATA Data Cables
  – 2 x Screws for M.2 Sockets
• Form Factor
  – Micro ATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm