ASUS Prime B450M-K II mATX Motherboard | AM4 | 2x DDR4 Slots
KEY FEATURES
- Comprehensive cooling: PCH heatsink, and Fan Xpert
- Ultrafast connectivity: M.2 support, 1 Gb Ethernet, and USB 3.2 Gen 1 Type-A
- 5X Protection III: Multiple hardware safeguards for all-around system protection
- LED illumination: Lighting control for both PCIe slot and audio trace paths
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Frequently Asked Questions
What processors are compatible with the ASUS Prime B450M-K II?
How much memory can the ASUS Prime B450M-K II support?
What cooling options does the motherboard offer?
ASUS Prime B450M-K II mATX Motherboard | AM4 | 2x DDR4 Slots
Description
The ASUS Prime B450M-K II brings essential AMD Ryzen support to compact builds through its micro ATX form factor and AM4 socket compatibility. This budget-friendly B450 chipset board works with AMD Ryzen 2000 series processors plus first and second-generation Threadripper chips, making it a practical foundation for mainstream desktop builds where space matters. With just two DDR4 memory slots supporting up to 64GB total capacity, it focuses on core functionality rather than extensive expansion options.
Memory support extends from standard DDR4-2133 up to DDR4-3200 speeds, giving you flexibility to choose performance levels that match your budget and needs. The board includes M.2 storage support for fast SSD installation, while SATA 6Gbps connections handle traditional hard drives and SATA SSDs. For display connectivity, you get HDMI, DVI-D, and D-Sub outputs built into the board, useful when running AMD APUs with integrated graphics.
Practical features include USB 3.2 Gen 1 Type-A ports for fast peripheral connections and Gigabit Ethernet for reliable network access. The BIOS FlashBack feature lets you update the motherboard firmware without needing a compatible CPU installed first, which proves handy when preparing the board for newer processor generations. ASUS includes an I/O shield in the box along with SATA cables and the user manual, covering the basics you need to get your build running.
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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 AM4 |
| Compatible processor series | AMD Ryzen 2000 Series, AMD Ryzen Threadripper 1000 Series, AMD Ryzen Threadripper 2000 Series |
| Memory | |
|---|---|
| Supported memory types | DDR4-SDRAM |
| Number of memory slots | 2 |
| Memory slots type | DIMM |
| ECC сompatibility | ECC |
| Supported memory clock speeds | 2133,2400,2666,2800,2933,3000,3200 MHz |
| Maximum internal memory | 64 GB |
| Unbuffered memory | Yes |
| Storage controllers | |
|---|---|
| Supported storage drive interfaces | M.2, PCI Express 3.0, SATA III |
| RAID levels | 0, 1, 10 |
| Internal I/O | |
|---|---|
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 1 |
| Number of SATA III connectors | 4 |
| S/PDIF out connector | Yes |
| Audio connector | Yes |
| Front panel audio connector | Yes |
| ATX Power connector (24-pin) | Yes |
| CPU fan connector | Yes |
| Number of chassis fan connectors | 2 |
| Rear panel I/O ports | |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 3 |
| Ethernet LAN (RJ-45) ports | 1 |
| PS/2 ports quantity | 2 |
| VGA (D-Sub) ports quantity | 1 |
| DVI-D ports quantity | 1 |
| Headphone outputs | 1 |
| Microphone in | Yes |
| Network | |
|---|---|
| Ethernet LAN | Yes |
| Ethernet interface type | Gigabit Ethernet |
| Wi-Fi | No |
| Features | |
|---|---|
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B450 |
| Audio chip | Realtek ALC887-VD2 |
| Audio output channels | 7.1 channels |
| Windows operating systems supported | Windows 10 x64, Windows 7 x64 |
| Harmonized System (HS) code | 84733020 |
| Expansion slots | |
|---|---|
| PCI Express x1 (Gen 2.x) slots | 2 |
| PCI Express x16 (Gen 3.x) slots | 2 |
| BIOS | |
|---|---|
| BIOS type | UEFI AMI |
| BIOS memory size | 128 Mbit |
| ACPI version | 6.1 |
| Weight & dimensions | |
|---|---|
| Width | 244 mm |
| Depth | 244 mm |
| Height | 259 mm |
| Packaging content | |
|---|---|
| Cables included | SATA |
| Bundled software | Armoury Crate, AI Suite 3, Performance and Power, Saving Utility, TurboV EVO, EPU, DIGI+ VRM, Fan Xpert, PC Cleaner, EZ update, System Information, ASUS CPU-Z, AI Charger, ASUS EZ Installer, DAEMON Tools, Norton Anti-virus software (Free Trial for 60 days), WinRAR, UEFI BIOS, ASUS EZ DIY, ASUS CrashFree BIOS 3, ASUS EZ Flash 3, ASUS UEFI BIOS EZ Mode |
| Other features | |
|---|---|
| Weight | 840 g |
Frequently Asked Questions
What processors are compatible with the ASUS Prime B450M-K II?
How much memory can the ASUS Prime B450M-K II support?
What cooling options does the motherboard offer?
Can I use M.2 drives with this motherboard?
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