The ASUS Prime B650M-K is an AMD B650 motherboard for socket AM5 processors in a compact Micro ATX size. It supports Ryzen 9000, 8000 and 7000 Series desktop CPUs up to 170W, two DDR5 slots for up to 96GB with AMD EXPO, a PCIe 4.0 x16 graphics slot and two M.2 slots, with M.2_1 running at PCIe 5.0 x4 on Ryzen 7000 and 9000 processors.

Moving to AM5 gives you a current AMD platform with DDR5 memory and fast NVMe storage. The ASUS Prime B650M-K keeps the essentials affordable, with Realtek 2.5Gb Ethernet, eight rear USB ports including two USB 3.2 Gen 2, HDMI and VGA outputs for processor graphics, and a front USB 3.2 Gen 1 Type-C connector. BIOS FlashBack lets you update the firmware from a USB drive without a CPU or memory installed.
Who is the ASUS Prime B650M-K for?
The ASUS Prime B650M-K suits home users, students and gamers building a Ryzen 7000, 8000 or 9000 Series PC in a Micro ATX case, as well as office builders who want a modern platform with room to upgrade. It is a sensible choice when you want DDR5 and PCIe 5.0 storage without paying for premium extras.
ASUS Prime B650M-K key features
- AMD B650 for socket AM5: Supports AMD Ryzen 9000, 8000 and 7000 Series desktop processors with power ratings up to 170W, on the long-term AM5 platform.
- DDR5 up to 96GB: Two DIMM slots take up to 96GB of dual-channel DDR5, rated up to 8000+ MT/s when overclocked, with AMD EXPO and OptiMem II.
- PCIe 5.0 M.2 storage: M.2_1 runs at PCIe 5.0 x4 with Ryzen 7000 and 9000 CPUs, and M.2_2 runs at PCIe 4.0 x4, plus four SATA 6Gb/s ports.
- PCIe 4.0 graphics slot: A PCIe 4.0 x16 slot runs at full x16 with Ryzen 7000 and 9000 processors, with two extra PCIe 4.0 x1 slots from the chipset.
- 2.5Gb Ethernet and USB: Realtek 2.5Gb LAN and eight rear USB ports, including two USB 3.2 Gen 2 Type-A, cover wired networking and fast peripherals.
- BIOS FlashBack: A rear BIOS FlashBack button updates the UEFI BIOS from a USB drive without a processor or memory, handy when installing newer Ryzen CPUs.

ASUS Prime B650M-K specifications
| Model | PRIME B650M-K |
|---|---|
| Condition | Brand new |
| Socket / CPU support | AMD AM5: Ryzen 9000, 8000 and 7000 Series (up to 170W) |
| Chipset | AMD B650 |
| Memory | 2 x DIMM, max 96GB DDR5, up to 8000+ MT/s (OC), dual channel, AMD EXPO |
| Expansion slots | 1 x PCIe 4.0 x16 (x16 with Ryzen 9000/7000; x8/x4 with Ryzen 8000); 2 x PCIe 4.0 x1 (chipset) |
| Storage | 2 x M.2 (M.2_1 PCIe 5.0 x4, M.2_2 PCIe 4.0 x4 with Ryzen 9000/7000); 4 x SATA 6Gb/s; RAID 0/1/10 |
| Display outputs | 1 x HDMI (4K@60Hz), 1 x VGA |
| LAN | Realtek 2.5Gb Ethernet |
| Rear USB | 2 x USB 3.2 Gen 2 Type-A, 2 x USB 3.2 Gen 1 Type-A, 4 x USB 2.0 Type-A |
| Audio | Realtek 7.1 HD audio codec, 3 audio jacks |
| BIOS | 256Mb flash ROM, UEFI AMI BIOS, BIOS FlashBack button |
| Operating system | Windows 11, Windows 10 64-bit |
| Form factor | Micro ATX, 24.4 x 22.1cm |
Full technical details are available on the official ASUS specifications page. Specifications may vary slightly by region.
What’s in the box
ASUS Prime B650M-K motherboard, 2 x SATA 6Gb/s cables, I/O shield, M.2 rubber pad package, M.2 screw package and user guide.
Before you buy
You need an AMD Ryzen 7000, 8000 or 9000 Series processor for socket AM5 and DDR5 memory, as DDR4 will not fit. AM4 coolers may need AM5-compatible mounting. Ryzen 9000 chips may require a BIOS update, which BIOS FlashBack handles without a CPU. Your power supply needs a 24-pin and an 8-pin CPU connector.
Browse more products in our ASUS motherboards and motherboards range, or contact us if you need help choosing the right part.
Why buy from The Print Cartridge Shop?
When you buy the ASUS Prime B650M-K from The Print Cartridge Shop you are buying from an Australian online store. Every order is sent with tracking, prices are in Australian dollars and include GST, and a tax invoice is supplied with every order. If you have a question before or after you buy, our team is happy to help by email or through our contact page, which makes us a simple choice for home offices, small businesses, gamers and PC builders.
Frequently asked questions
Does the ASUS Prime B650M-K support Ryzen 9000 processors?
Yes. ASUS lists support for Ryzen 9000, 8000 and 7000 Series desktop processors. Some Ryzen 9000 chips may need a BIOS update, which you can do with BIOS FlashBack.
Does the ASUS Prime B650M-K have WiFi?
No. It does not include built-in WiFi or Bluetooth. It has Realtek 2.5Gb Ethernet for wired networking, and you can add a separate wireless card if needed.
Can I use DDR4 memory?
No. This board supports DDR5 memory only, with two DIMM slots for up to 96GB in dual-channel mode. DDR4 modules are keyed differently and will not fit.
How long does delivery of the ASUS Prime B650M-K take?
Please allow 7–21 business days for delivery anywhere in Australia. We email a tracking number as soon as your order is dispatched.
Is the ASUS Prime B650M-K a genuine ASUS product?
Yes. It is a genuine ASUS product sourced through our international supplier. Because it is imported stock, warranty support is provided by The Print Cartridge Shop rather than ASUS Australia.
Delivery, warranty and support
We deliver Australia-wide. This item ships from our international supplier, so please allow 7–21 business days for delivery; you will receive a tracking number by email as soon as it is dispatched. The ASUS Prime B650M-K is imported stock and is not covered by the ASUS Australia local warranty. If anything is wrong with your order, contact The Print Cartridge Shop and we will arrange a repair, replacement or refund in line with the Australian Consumer Law. Prices are in Australian dollars and include GST.












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