ASUS Prime A320M-K/CSM DDR4 AMD Motherboard
MPN ASUS-PRIME-A320M-K-CSM · Brand ASUS · mATX
The ASUS Prime A320M-K/CSM is a Micro-ATX motherboard for AMD AM4 processors, featuring DDR4 support up to 32GB, M.2 NVMe storage, ASUS 5X Protection III, and a CSM programme offering up to 36-month lifecycle support with ASUS Control Center Express
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Overview
The ASUS Prime A320M-K/CSM is a Micro-ATX motherboard built on the AMD A320 chipset, designed for the AMD AM4 socket. It supports 1st and 2nd generation AMD Ryzen processors, AMD Ryzen with Radeon Vega Graphics, Athlon with Radeon Vega Graphics, 7th Generation A-Series, and Athlon X4 processors, making it a versatile choice for budget-conscious AMD builds and stable corporate deployments alike. As an ASUS Corporate Stable Model (CSM) product, this motherboard is part of a commercial programme offering up to 36-month product lifecycle support and a 6-month end-of-life notice. Each unit includes ASUS Control Center Express, a centralised IT management tool that allows IT teams to remotely monitor endpoints, schedule BIOS and software updates, and manage device configurations across corporate networks. Memory flexibility is a strong point: the board accommodates two DDR4 DIMM slots supporting up to 32GB of unbuffered memory. With Ryzen 1st and 2nd generation processors, DDR4 speeds up to 3200MHz (O.C.) are supported; with 7th Generation A-Series and Athlon X4 processors, speeds up to 2400MHz are available. Dual-channel memory architecture is supported. Storage options include four SATA 6Gb/s ports with RAID 0, 1, and 10 support via the A320 chipset, plus one M.2 Socket 3 (M key, 2242/2260/2280) that supports both SATA and PCIe 3.0 x4 mode when used with Ryzen 1st or 2nd generation processors, enabling NVMe SSD data-transfer rates up to 32Gb/s. Connectivity on the rear I/O panel includes one HDMI 1.4b port (up to 4096x2160 @ 24Hz), one D-Sub (RGB) port (up to 1920x1200 @ 60Hz), four USB 3.1 Gen 1 ports, two USB 2.0 ports, a Gigabit LAN port via Realtek RTL8111H, PS/2 keyboard and mouse ports, and three audio jacks. Audio is handled by a Realtek ALC887 8-channel HD Audio CODEC, with an S/PDIF out header available internally. The board ships with ASUS 5X Protection III, which encompasses SafeSlot Core (reinforced PCIe x16 slot), LANGuard (surge and ESD protection on the LAN port), Overvoltage Protection, Stainless-Steel Back I/O (rated for 3x the corrosion resistance of standard panels), and DIGI+ VRM for stable digital power delivery. ESD Guards protect ports from electrostatic discharge up to ±10kV (air) and ±6kV (contact). The UEFI AMI BIOS (128Mb Flash ROM) includes EZ Flash 3, CrashFree BIOS 3, multi-language support, DRAM SPD information, and Qfan Control. Fan management is handled by Fan Xpert with 4-pin/3-pin PWM/DC mode support for both the CPU and chassis fan headers. Key Specifications: - Form Factor: Micro-ATX, 8.9 x 8.7 in (22.6 x 22.1 cm) - Chipset: AMD A320 - Socket: AMD AM4 - Memory: 2x DIMM, max 32GB DDR4, up to 3200MHz O.C. (Ryzen); dual-channel - Storage: 4x SATA 6Gb/s (RAID 0/1/10), 1x M.2 (PCIe 3.0 x4 + SATA, 2242/2260/2280) - Graphics Output: 1x HDMI 1.4b, 1x D-Sub (VGA) - LAN: Realtek RTL8111H Gigabit - Audio: Realtek ALC887 8-channel HD - USB (Rear): 4x USB 3.1 Gen 1, 2x USB 2.0 - USB (Internal): 1x USB 3.1 Gen 1 header (2 ports), 2x USB 2.0 headers (4 ports) - BIOS: 128Mb Flash ROM, UEFI AMI, EZ Flash 3, CrashFree BIOS 3 - OS Support: Windows 10 64-bit, Windows 7 64-bit - Warranty: 3 Years
Datasheet
| Warranty | 3 Years |
|---|---|
| Form Factor | mATX |
| Chipset | AMD A320 |
| CPU Type | AMD AM4 Socket for 2nd/1st AMD RyzenTM/2nd and 1st Gen AMD RyzenTM with RadeonTM Vega Graphics/AthlonTM with RadeonTM Vega Graphics/7th Generation A-series/Athlon X4 Processors |
| Lan | Realtek® RTL8111H, 1 x Gigabit LAN Controller(s) |
| Bios | 128 Mb Flash ROM, UEFI AMI BIOS, PnP,WfM2.0, SM BIOS 3.0, ACPI 6.1, Multi-language BIOS, ASUS EZ Flash 3, ASUS CrashFree BIOS 3, My Favorites, Last Modified log, F12 PrintScreen, ASUS DRAM SPD (Serial Presence Detect) memory information, F6 Qfan Control |
| Audio | Realtek® ALC887 8-Channel High Definition Audio CODEC |
| Memory | AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics/ Ryzen™ 1st Generation Processors2 x DIMM, Max. 32GB, DDR4 3200(O.C.)/3000(O.C.)/2933(O.C.)/ 2800(O.C.)/2666/2400/2133 MHz Un-buffered MemoryAMD 7th Generation A-Series/Athlon X4 Processors2 x DIMM, Max. 32GB, DDR4 2400/2133 MHz Un-buffered MemoryDual Channel Memory ArchitectureECC Memory (ECC mode) support varies by CPU.* Hyper DIMM support is subject to the physical characteristics of individual CPUs |
| Graphic | Integrated Graphics in the AMD Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics/ 7th Generation A-Series APUMulti-VGA output support : HDMI/RGB ports- Supports HDMI 1.4b with max. resolution 4096 x 2160 @ 24 Hz / 2560 x 1600 @ 60 Hz- Supports RGB with max. resolution 1920 x 1200 @ 60 HzMaximum shared memory of 2048 MB (for iGPU exclusively) |
| Storage | AMD A320 chipset : 4 x SATA 6Gb/s port(s), gray,Support Raid 0, 1, 10AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Ryzen™ 1st Generation Processors : 1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)AMD 7th Generation A-Series/ Athlon™ X4 Processors : 1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA mode)AMD Athlon™ with Radeon™ Vega Graphics Processors : 1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA mode) |
| USB Ports | AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Athlon™ with Radeon™ Vega Graphics/ Ryzen™ 1st Generation/ 7th Generation A-Series/ Athlon™ X4 Processors :4 x USB 3.1 Gen 1 port(s) (4 at back panel, blue)AMD A320 chipset :2 x USB 3.0 port(s) (2 at mid-board)AMD A320 chipset :6 x USB 2.0 port(s) (2 at back panel, , 4 at mid-board) |
| Back I/O Ports | 1 x PS/2 keyboard (purple)1 x PS/2 mouse (green)1 x D-Sub1 x HDMI1 x LAN (RJ45) port(s)4 x USB 3.1 Gen 1 (blue)2 x USB 2.03 x Audio jack(s) |
| Expansion Slots | AMD Ryzen™ 2nd Generation/ Ryzen™ 1st Generation Processors1 x PCIe 3.0/2.0 x16 (x16 mode)AMD Ryzen™ with Radeon™ Vega Graphics /7th Generation A-Series/Athlon X4 Processors1 x PCIe 3.0/2.0 x16 (x8 mode)AMD Athlon™ with Radeon™ Vega Graphics Processors1 x PCIe 3.0/2.0 x16 (x4 mode)AMD A320 chipset2 x PCIe 2.0 x1 |
| Operating System | Windows® 10 64-bitWindows® 7 64-bit *1 |
| Special Features | ASUS 5X Protection III :- ASUS SafeSlot Core: Fortified PCIe Slot prevents damage- ASUS LANGuard: Protects against LAN surges, lightning strikes and static-electricity discharges!- ASUS Overvoltage Protection: World-class circuit-protecting power design- ASUS Stainless-Steel Back I/O: 3X corrosion-resistance for greater durability!- ASUS DIGI VRM: 6 Phase digital power designASUS Exclusive Features :- AI Suite 3- Ai ChargerASUS Quiet Thermal Solution :- Stylish Fanless Design Heat-sink solution- ASUS Fan XpertASUS EZ DIY :- ASUS CrashFree BIOS 3- ASUS EZ Flash 3- ASUS UEFI BIOS EZ Mode- Multi-language BIOSASUS Q-Design :- ASUS Q-Slot- ASUS Q-DIMM |
| Internal I/O Ports | 1 x USB 3.1 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.1 Gen 1 port(s) (19-pin)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 COM port(s) connector(s)4 x SATA 6Gb/s connector(s)1 x CPU Fan connector(s) (1 x 4 -pin)1 x Chassis Fan connector(s) (1 x 4 -pin)1 x S/PDIF out header(s)1 x 24-pin EATX Power connector(s)1 x 4-pin ATX 12V Power connector(s)1 x Front panel audio connector(s) (AAFP)1 x System panel(s)1 x Clear CMOS jumper(s)1 x Speaker connector |
| Operating System Support | Windows® 10 |




