Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Processor | |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor socket | AM5 |
| Supported processor sockets | Socket AM5 |
| Memory | |
| Maximum internal memory | 256 GB |
| Supported memory types | DDR5 |
| Memory channels | Dual-channel |
| Unbuffered memory | ![]() |
| Memory slots type | DIMM |
| Number of memory slots | 4 |
| Supported memory clock speed (max) | 8000 MHz |
| Maximum internal memory per slot | 64 GB |
| ECC сompatibility | ECC & Non-ECC |
| Weight & dimensions | |
| Width | 244 mm |
| Depth | 244 mm |
| Networking | |
| Ethernet LAN | ![]() |
| Wi-Fi | ![]() |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Internal I/O | |
| USB 2.0 connectors | 2 |
| S/PDIF out connector | ![]() |
| CPU fan connector | ![]() |
| Number of COM connectors | 1 |
| ATX Power connector (24-pin) | ![]() |
| Chassis intrusion connector | ![]() |
| Number of chassis fan connectors | 3 |
| Front panel audio connector | ![]() |
| TPM connector | ![]() |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| EPS power connector (8-pin) | ![]() |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 0 |
| Front panel connector | ![]() |
| 12V power connector | ![]() |
| RGB LED pin header | ![]() |
| Number of RGB LED pin headers | 3 |
| Number of CPU fan connectors | 1 |
| Number of EPS power connectors (8-pin) | 1 |
| Back panel I/O ports | |
| Line-in | ![]() |
| USB 2.0 ports quantity | 4 |
| Ethernet LAN (RJ-45) ports | 1 |
| Headphone outputs | 1 |
| Microphone in | ![]() |
| VGA (D-Sub) ports quantity | 0 |
| DVI-D ports quantity | 0 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 2 |
| DisplayPort version | 1.4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 0 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 0 |
| Storage controllers | |
| RAID levels | 0, 1, 5, 10 |
| Number of HDDs supported | 4 |
| RAID support | ![]() |
| Number of storage drives supported | 7 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | PCI Express 4.0, PCI Express 5.0 |
| Packaging data | |
| Package weight | 1.45 kg |
| Package depth | 275 mm |
| Package height | 67.5 mm |
| Package width | 275 mm |
| Packaging content | |
| Cables included | SATA |
| Screws included | ![]() |
| Expansion slots | |
| Number of M.2 (M) slots | 3 |
| PCI Express x16 (Gen 4.x) slots | 2 |
| PCI Express x16 (Gen 5.x) slots | 1 |
| 1st M.2 largest key size | 2280 |
| 2nd M.2 largest key size | 2280 |
| 3rd M.2 largest key size | 2280 |
| 4th M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 5.0 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| 3rd M.2 highest PCI Express generation | 4.0 |
| 4th M.2 highest PCI Express generation | 4.0 |
| BIOS | |
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |
| Graphics | |
| Maximum resolution | 7680 x 4320 pixels |
| Parallel processing technology support | Not supported |
| Features | |
| Motherboard chipset | AMD B850 |
| Motherboard form factor | micro ATX |
| Product colour | Grey |
| Audio output channels | 7.1 channels |
| Cooling type | Passive |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Power source type | ATX |
| Motherboard chipset family | AMD |
| Component for | PC |
| EAN | 4711636054720 |
| Warranty | 1 year |
The ASUS PRIME B850M-A-CSM is a reliable and feature-rich micro-ATX motherboard designed to unleash the full potential of AMD Ryzen™ 9000 series processors, and is also designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications. Ideal for both PC DIY builders and corporate environments needing a stable platform, this motherboard offers a blend of performance and manageability. ASUS Corporate Stable Model (CSM) provides ensures long-term availability and support.
Featuring an 8+2+1 phase digital power design, the PRIME B850M-A-CSM ensures stable power delivery for enhanced performance and overclocking capabilities. It supports DDR5 memory with AEMP (ASUS Enhanced Memory Profile) for optimized memory speeds. The inclusion of a Realtek 2.5Gb Ethernet provides faster data transfers, while the pre-mounted I/O shield enhances build simplicity and aesthetics. ASUS Fan Xpert 2+ allows for ultimate cooling control, ensuring your system remains stable under heavy workloads.
Key Features- AM5 Socket for AMD Ryzen™ Desktop processors
- AMD B850 Chipset
- 4 x DIMM slots with DDR5 support and Dual channel AEMP
- 1 x PCIe 5.0 x16 slot (supports x16 mode) with SafeSlot
- 1 x PCIe 4.0 x16 slot (supports x1 mode)
- M.2_1 2280 (PCIe 5.0 x4 mode)
- M.2_2 2280 (PCIe 4.0 x4 mode)
- M.2_3 2242/2260/2280 (PCIe 4.0 x4 mode)
- Realtek 2.5Gb Ethernet for faster data transfers
- USB 5Gbps Type-C® for rapid data transmission
- Aura Sync for full RGB lighting control
- Pre-mounted I/O shield for safeguarding ports and enhancing aesthetics
- ASUS PRIME B850M-A-CSM Motherboard
- I/O Shield
- SATA Cables
- User Manual
- Driver DVD
- M.2 Screws
Estimated delivery: 03.11 - 05.11
Today: 10:00 - 18:00
Estimated delivery: 03.11 - 05.11
Today: 09:00 - 17:00
Estimated delivery: 03.11 - 05.11
Today: 10:00 - 17:00
Estimated delivery: 03.11 - 05.11
Today: 10:00 - 18:00
Estimated delivery: 03.11 - 05.11
Today: 10:00 - 17:00
Estimated delivery time: 03.11 - 05.11
Estimated delivery time: 04.11 - 05.11
Estimated delivery time: 03.11 - 04.11
Estimated delivery time: 04.11 - 05.11
Estimated delivery time: 04.11
Estimated delivery time: 04.11
- manual pdf (English)


