Chipset AMD B550 CPU Socket AM4 Memory Slots 4x 288-Pin Memory Support DDR4 1866, 2133, 2400, 2667, 2800, 2933, 3000, 3066, 3200, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4400 MHz M.2 1x M Key 2242, 2260, 2280, 22110 (PCIe 4.0 x4, PCIe 3.0 x4) 1x M Key 2242, 2260, 2280 (PCIe 3.0 x4) Expansion Slots 1x PCIe 4.0 x16 (x16 mode) 1x PCIe 3.0 x16 (x4 mode) 2x PCIe 3.0 x1 Form Factor ATX Chipset AMD B550 CPU Socket AM4 USB 4 x USB-A (USB 2.0) 2 x USB-A (USB 3.0 / 3.1/3.2 Gen 1) 1 x USB-A (USB 3.1/3.2 Gen 2) 1 x USB-C (USB 3.1/3.2 Gen 2) Thunderbolt No Display 1x DisplayPort 1x HDMI Audio 5x 1/8" / 3.5 mm 1x S/PDIF Ethernet / Controller 1x Gigabit PS/2 1x Combo Buttons BIOS Flashback Memory Slots 4x 288-Pin Memory Support DDR4 1866, 2133, 2400, 2667, 2800, 2933, 3000, 3066, 3200, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4400 MHz Maximum Capacity 128 GB Channel Architecture Dual Channel ECC Support Non-ECC, ECC (Non-ECC Mode) Unbuffered SATA 6x SATA IIIM.2 1x M Key 2242, 2260, 2280, 22110 (PCIe 4.0 x4, PCIe 3.0 x4) 1x M Key 2242, 2260, 2280 (PCIe 3.0 x4) RAID Support RAID 0, 1, 10 (SATA) RAID 0, 1 (M.2)Internal I/O Expansion Slots 1x PCIe 4.0 x16 (x16 mode) 1x PCIe 3.0 x16 (x4 mode) 2x PCIe 3.0 x1 USB 1x USB 3.0 / 3.1/3.2 Gen 1 Header (Supports 1 USB-C Port) 1x USB 3.0 / 3.1/3.2 Gen 1 Header (Supports 2 USB-A Port) 2x USB 2.0 Header (Supports 4 USB-A Port) Multi-GPU Support 2-Way AMD CrossFireX Air Cooling 1x 4-Pin CPU 6x 4-Pin System Liquid Cooling 1x 4-Pin Pump Power Connectors 1x 24-Pin Mainboard 1x 8-Pin ATX Security Chassis Intrusion, TPM Module LED Header 3x RGB Diagnostics Clear CMOS BIOS ROM 256 Mb Front Panel I/O Front Panel I/O USB 3.0 / 3.1/3.2 Gen 1