ASUS PRIME B850M-K mATX Motherboard | AM5 | 2x DDR5 Slots
KEY FEATURES
- AMD Socket AM5 AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
- PC micro ATX AMD B850 7.1 channels
- DDR5-SDRAM 2 DIMM Maximum internal memory: 128 GB
- HDD & SSD M.2, SATA III RAID support Number of storage drives supported: 6
- BIOS type: UEFI AMI 256 Mbit
- 2.5 Gigabit Ethernet
100% Safe & Secure Checkout
Reviews
Frequently Asked Questions
What processors are compatible with the ASUS PRIME B850M-K?
How much memory can the motherboard support?
Does the motherboard support RGB lighting?
ASUS PRIME B850M-K mATX Motherboard | AM5 | 2x DDR5 Slots
Description
The ASUS PRIME B850M-K brings AMD's latest B850 chipset to a compact mATX design, making it an excellent choice for builders who want modern features without the bulk of a full ATX board. This socket AM5 motherboard supports all current AMD Ryzen processors from the 7000, 8000, and 9000 series, giving you access to the latest CPU technology. The black PCB keeps things understated while still including RGB LED headers for those who want to add some lighting accents.
Memory support centers on DDR5 with two DIMM slots that can accommodate up to 128GB total capacity, plus ECC compatibility for users who need error correction. Storage gets two M.2 slots - one PCIe 5.0 slot for cutting-edge SSD speeds and another PCIe 4.0 slot for additional fast storage. For graphics cards, you get one PCIe 4.0 x16 slot and one PCIe 5.0 x16 slot, ensuring compatibility with both current and next-generation GPUs while providing upgrade flexibility.
ASUS includes the essentials with mounting screws and their BIOS Flashback feature, which lets you update the BIOS without needing a compatible CPU installed first - particularly useful when new processors launch. The board also supports Aura Sync RGB lighting ecosystem if you want to coordinate lighting effects across compatible components. With its focus on core functionality rather than extreme overclocking features, this motherboard suits mainstream builds where reliability and modern connectivity matter more than maximum performance tuning.
Feature
Easy 14 days Returns
Eligible for Next day Delivery
100% Money-back guarantee
Reliable Customer Support
Secure payment method
Shipping Information
- Next Business Day: £6.99
- 2 days Delivery: £4.99
- 3- 5 Days Shipping: £3.99
- Orders Over £99.00: Free Standard Delivery
| Processor | |
|---|---|
| Processor manufacturer | AMD |
| Processor socket | Socket AM5 |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Supported processor sockets | Socket AM5 |
| Memory | |
|---|---|
| Supported memory types | DDR5-SDRAM |
| Number of memory slots | 2 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| ECC сompatibility | ECC & Non-ECC |
| Maximum internal memory | 128 GB |
| Unbuffered memory | Yes |
| Storage controllers | |
|---|---|
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| Number of storage drives supported | 6 |
| Number of HDDs supported | 4 |
| RAID support | Yes |
| RAID levels | 0, 1, 5, 10 |
| Graphics | |
|---|---|
| Parallel processing technology support | Not supported |
| Internal I/O | |
|---|---|
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| S/PDIF out connector | Yes |
| Front panel audio connector | Yes |
| Front panel connector | Yes |
| ATX Power connector (24-pin) | Yes |
| CPU fan connector | Yes |
| Number of CPU fan connectors | 1 |
| Number of chassis fan connectors | 3 |
| EPS power connector (8-pin) | Yes |
| 12V power connector | Yes |
| TPM connector | Yes |
| Number of COM connectors | 1 |
| RGB LED pin header | Yes |
| Rear panel I/O ports | |
|---|---|
| USB 2.0 ports quantity | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| 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 |
| DisplayPorts quantity | 1 |
| Line-in | Yes |
| Microphone in | Yes |
| Network | |
|---|---|
| Ethernet LAN | Yes |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Wi-Fi | No |
| Top Wi-Fi standard | Not available |
| Features | |
|---|---|
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B850 |
| Audio output channels | 7.1 channels |
| Product colour | Black |
| Cooling type | Passive |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Expansion slots | |
|---|---|
| PCI Express x16 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 5.x) slots | 1 |
| Number of M.2 (M) slots | 2 |
| 1st M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 5.0 |
| 2nd M.2 largest key size | 2280 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| BIOS | |
|---|---|
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| Packaging data | |
|---|---|
| Package width | 564 mm |
| Package depth | 288 mm |
| Package height | 297 mm |
| Package weight | 1.07 kg |
| Weight & dimensions | |
|---|---|
| Width | 244 mm |
| Depth | 221 mm |
| Packaging content | |
|---|---|
| Screws included | Yes |
| Cables included | SATA |
Frequently Asked Questions
What processors are compatible with the ASUS PRIME B850M-K?
How much memory can the motherboard support?
Does the motherboard support RGB lighting?
What is the form factor of the ASUS PRIME B850M-K?
Can’t find what you’re looking for?
Our friendly support team is just a message away, ready to assist with anything. Our team is experienced with gaming gear, home tech, and everything in between—feel free to reach out.
📧 Email: help@gotraka.com
📞 Phone: 020 8208 1234
💬 Live Chat: Available 9 AM – 6 PM ( Monday - Friday )
