Pro A520M-C/CSM Features: ASUS exclusive self-recovering BIOS technology for automatic system BIOS recovery from a verified backup Dedicated LPC header and debug card with LCD display for faster troubleshooting Event log for capturing and managing detailed system information Innovative moistureresistant coating to protect the motherboard from harsh environments Commercial BIOS kit to make customization faster and more efficient ASUS Control Center Express(ACCE) to make IT endpoint management easier Specifications: CPU Build in AMD AM4 Socket for 3rd Gen AMD Ryzen™ and 3rd Gen AMD Ryzen™ with Radeon™ Graphics Processors Chipset AMD A520 Memory 2 x DIMM, Max. 64GB, DDR4 4600(O.C)/4400(O.C)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2800/2666/2400/2133 MHz Unbuffered Memory Dual Channel Memory Architecture ECC Memory (ECC mode) support varies by CPU. Graphic 1 x DSub 1 x DVID 1 x HDMI 2.1(4K@60HZ) Expansion Slots 3rd Gen AMD Ryzen™ and 3rd Gen AMD Ryzen™ with Radeon™ Graphics Processors 1 x PCIe 3.0 x16 (x16 mode) AMD A520 Chipset 2 x PCIe 3.0 x1 1 x PCI Storage Total supports 1 x M.2 slot(s) and 4 x SATA 6Gb/s ports 3rd Gen AMD Ryzen™ and 3rd Gen AMD Ryzen™ with Radeon™ Graphics Processors : 1 x M.2 Socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support AMD A520 Chipset : 4 x SATA 6Gb/s port(s), Support Raid 0, 1, 10 LAN Realtek RTL8111H 1Gb Ethernet ASUS LANGuard Audio Realtek ALC887 7.1 Surround Sound High Definition Audio CODEC Supports : Jackdetection, Multistreaming, Front Panel Jackretasking, up to 24Bit/192kHz playback USB Ports Rear USB Port ( Total 6 ) 4 x USB 3.2 Gen 1 port(s)(4 x TypeA) 2 x USB 2.0 port(s)(2 x TypeA) Front USB Port ( Total 6 ) 2 x USB 3.2 Gen 1 port(s)(2 x TypeA) 4 x USB 2.0 port(s)(4 x TypeA) Software Features ASUS Exclusive Software IT Management software supported ASUS Control Center Express(ACCE) ASUS Special Features ASUS QDesign ASUS QDIMM ASUS QSlot ASUS Thermal Solution Aluminum heatsink design ASUS EZ DIY Box Headers Bespoke Motherboard Design & Business Focused Features ASUS Self Recovering BIOS ASUS Event Log ASUS Commercial BIOS kit AntiMoisture Coating 24/7 Reliability Overcurrent Protection Back I/O Ports 1 x PS/2 keyboard (purple) 1 x PS/2 mouse (green) 1 x DVID 1 x DSub 1 x HDMI 1 x LAN (RJ45) port(s) 4 x USB 3.2 Gen 1 (blue) TypeA 2 x USB 2.0 1 x COM port(s) 3 x Audio jack(s) Internal I/O Ports 1 x CPU Fan connector(s) 2 x Chassis Fan connector(s) 1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s) 1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode) 1 x SPI TPM header 1 x LPT header 4 x SATA 6Gb/s connector(s) 1 x 24pin EATX Power connector(s) 1 x 8pin EATX 12V Power connectors 1 x Front panel audio connector(s) (AAFP) 1 x Clear CMOS jumper(s) 1 x System panel connector 1 x COM port header 1 x Chassis intrusion header 1 x LPC Debug header 1 x Speaker connector Accessories User's manual 1 x ACC Express Activation Key Card I/O Shield 2 x SATA 6Gb/s cable(s) 1 x Supporting DVD 1 x M.2 SSD screw package(s) BIOS 256 Mb Flash ROM, UEFI AMI BIOS Manageability WOL by PME, PXE Operating System Windows® 10 64bit Form Factor mATX Form Factor 9.6 inch x 9.0 inch ( 24.4 cm x 22.9 cm )