The Asus PRIME B550M-A is a Micro ATX motherboard designed for AMD processors with an AM4 socket. It features four memory slots compatible with DDR4 memory, multiple storage interfaces including M.2 and SATA, and supports a variety of AMD Ryzen series processors.

• Form factor: Micro ATX
• Processor socket: AM4
• Memory slots: 4 (supports DDR4)
• Number of SATA connectors: 4
• Storage interfaces: M.2, SATA

Internal I/O

• Number of SATA connectors: 4
• Supported hard disk drive interfaces: M.2, SATA

Memory

• Memory slots: 4
• Supported memory types: DDR4

Performance

• Chipset: AMD B
• Motherboard form factor: Micro ATX

Processor

• Processor family: AMD
• Processor socket: AM4
• Compatible processor series: Supports AMD Ryzen 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors

Technical details

• Producer product name: PRIME B550M-A
• Net weight: 0.92 kg

Specifications

• Warranty: 36 month(s)

Additional specifications

• Processor manufacturer: AMD
• Number of memory slots: 4
• Memory slots type: DIMM
• Supported memory clock speeds: 2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600 MHz
• Maximum internal memory: 128 GB
• Supported storage drive interfaces: M.2, SATA
• Number of storage drives supported: 6
• RAID support: Yes
• USB 2.0 connectors: 2
• USB 3.2 Gen 1 (3.1 Gen 1) connectors: 1
• USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 4
• USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity: 2
• Ethernet LAN (RJ-45) ports: 1
• PS/2 ports quantity: 1
• HDMI ports quantity: 1
• DVI-D ports quantity: 1
• Ethernet LAN: Yes
• Ethernet interface type: Gigabit Ethernet
• LAN controller: Realtek 8111H
• Wi-Fi: No
• Top Wi-Fi standard: Not available
• Bluetooth: Yes
• Bluetooth version: 5.1
• Motherboard chipset: AMD B550
• Component for: PC
• Motherboard chipset family: AMD
• PCI Express x16 (Gen 4.x) slots: 1
• Number of M.2 (M) slots: 2
• BIOS type: UEFI AMI
• BIOS memory size: 256 Mbit
• Harmonized System (HS) code: 84733020