Learn more about ASRock B550M Pro SEModelBrandASRockModelB550M Pro SESupported CPUCPU Socket TypeAM4CPU Type- Supports AMD AM4 Socket Ryzen 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series Desktop Processors* * Not compatible with AMD Athlon™ Processors.ChipsetsChipsetAMD PRO 565MemoryNumber of Memory Slots4x288pin (DDR4)Memory Standard- 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* * For Ryzen Series APUs (Picasso, Cezanne and Renoir), ECC is only supported with PRO CPUs. * Please refer to Memory Support List on ASRock's website for more information. (https://www.asrock.com/) * For non-XMP memory frequency support, please refer to the Specification on ASRock's website. * For more details, please refer to the QVL on ASRock's website.Maximum Memory Supported128GBMemory FeatureSupports Extreme Memory Profile (XMP) memory modulesExpansion SlotsPCI Express 4.0 x16AMD 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 NVMe SSD as boot disks - Supports AMD CrossFirePCI Express x11 x PCIe 3.0 x1 Slot (PCIE2: x1 mode)Storage DevicesSATA 6Gb/s4 x SATA 6Gb/sM.2CPU: - 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* * Supports NVMe SSD as boot disksSATA RAID0/1/10Onboard AudioAudio Chipset7.1 CH HD Audio (Realtek ALC897 Audio Codec)Audio Channels7.1 ChannelsOnboard LANLAN ChipsetDragon 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 ControlMax LAN Speed2.5GbpsRear Panel PortsBack I/O Ports- 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 / MicrophoneInternal I/O ConnectorsOnboard USB- 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)Other Connectors- 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 Front Panel Audio Connector * 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.Physical SpecForm FactorMicro ATXDimensions (W x L)9.6" x 9.6"Power Pin- 1 x 24 pin ATX Power Connector - 1 x 8 pin 12V Power ConnectorWindows 11 CompatibilityWindows 11SupportedFeaturesFeaturesRock-Solid Durability - 8 Power Phase - Pre-Installed I/O Shield Ultrafast Connectivity - 2.5G LAN Software - ASRock Motherboard Utility (A-Tuning) - ASRock Dragon 2.5G LAN Software - ASRock Polychrome SYNC * These utilities can be downloaded from ASRock Live Update & APP Shop. UEFI - ASRock Full HD UEFI - ASRock Instant FlashPackagingPackage Contents- 1 x User Manual - 2 x SATA Data Cables - 2 x Screws for M.2 SocketsShippingEnjoy fast and reliable shipping when you buy your products from Newegg. Our ordering and shipping services are among the best in the industry due to short processing times and a variety of shipping methods. Your orders are packaged at one of the many local warehouses across the country, minimizing delivery times and ensuring you get your purchases as soon as possible.PaymentsNewegg has partnered with PayPal to offer you the very best in payment services. PayPal allows you to buy with confidence, knowing your payments are processed quickly and securely with state-of-the-art encryption technology.ReturnReturns are subject to restocking fees of 15% - 30% of the purchase price and return shipping fees. 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