| Basic Information | ||
| Supported CPU | AMD Socket AM4 for AMD Ryzen 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors | |
| Chipset | AMD B550 Chipset | |
| BIOS | 128 Mb Flash ROM, UEFI AMI BIOS | |
| Form Factor | micro-ATX | |
| Audio | Realtek 7.1 Surround Sound High Definition Audio CODEC* - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - Premium audio capacitors - Dedicated audio PCB layers A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output. |
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| Expansion Slots | ||
| PCI | AMD Ryzen 5000 Series/ 3000 Series Desktop Processors 1 x PCIe 4.0 x16 slot (supports x16 mode) AMD Ryzen 5000 G-Series/ 4000 G-Series Desktop Processors 1 x PCIe 3.0 x16 slot (supports x16 mode) AMD B550 Chipset 1 x PCIe 3.0 x1 slot |
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| M.2 Socket | 2 x M.2 slots | |
| Memory | ||
| Maximum Memory | 64GB | |
| Slots | 2 x DIMM | |
| Supported Memory | 5100(OC)/4866(OC)/4600(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133, Un-buffered Memory Dual Channel Memory Architecture ECC memory (ECC mode) support varies by CPU. |
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| Type | DDR4 | |
| Graphics | ||
| Graphics | 1 x DisplayPort 1 x HDMI™ port Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications. Supports max. 4K@60Hz as specified in DisplayPort 1.4. Supports 4K@60Hz as specified in HDMI 2.1. |
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| Connector & Ports | ||
| HDMI | 1 x HDMI port | |
| USB (s) | Rear USB (Total 6 ports) 4 x USB 3.2 Gen 1 (5G) ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) Front USB (Total 7 ports) 1 x USB 3.2 Gen 1 (5G) connector (supports USB Type-C) 1 x USB 3.2 Gen 1 (5G) header supports 2 additional USB 3.2 Gen 1 ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports |
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| LAN Port (s) | 1 x Realtek 1Gb Ethernet | |
| Supported Storage | Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports AMD Ryzen 5000 Series/ 3000 Series Desktop Processors M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 & SATA modes) AMD Ryzen 5000 G-Series/ 4000 G-Series Desktop Processors M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes) AMD B550 Chipset M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes) 4 x SATA 6Gb/s ports |
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| RAID | AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1/10. | |
| Audio | 3 x Audio jacks | |
| Internal I/O Ports | Fan and Cooling related 1 x 4-pin CPU Fan header 2 x 4-pin Chassis Fan headers Power related 1 x 24-pin Main Power connector 1 x 8-pin +12V Power connector Storage related 2 x M.2 slots (Key M) 4 x SATA 6Gb/s ports USB 1 x USB 3.2 Gen 1 (5G) connector (supports USB Type-C) 1 x USB 3.2 Gen 1 (5G) header supports 2 additional USB 3.2 Gen 1 ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports Miscellaneous 3 x Addressable Gen 2 headers 1 x Clear CMOS header 1 x COM Port header 1 x Front Panel Audio header (AAFP) 1 x S/PDIF Out header 1 x Speaker header 1 x SPI TPM header (14-1 pin) 1 x 10-1 pin System Panel header |
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| Display Port (s) | 1 x DisplayPort | |
| TPM (Trusted Platform Module ) | 1 x SPI TPM header (14-1 pin) | |
| Others | ||
| Special Features | ASUS 5X PROTECTION III - DIGI+ VRM - LANGuard - Overvoltage Protection - SafeSlot Core - Stainless-Steel Back I/O ASUS Q-Design - Q-DIMM - Q-LED Core - Q-Slot ASUS Thermal Solution - Aluminum heatsink design Aura Sync - Addressable Gen 2 headers |
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| Bundled Software | ASUS Exclusive Software Armoury Crate - Aura Creator - Aura Sync AI Suite 3 - Performance And Power Saving Utility TurboV EVO EPU DIGI+ VRM Fan Xpert 2+ - EZ update ASUS CPU-Z Norton 360 Deluxe (60 Days Free Trial) WinRAR UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode |
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| Warranty Information | ||
| Warranty | 3 Year | |
The Asus PRIME B550M-K ARGB is a highly efficient and reliable micro-ATX motherboard designed to extract maximum performance from AMD Ryzen™ 5000, 5000 G-Series, 4000 G-Series, and 3000 Series desktop processors. Utilizing the well-established AM4 socket and B550 chipset, this motherboard serves as an excellent, budget-friendly foundation for mainstream gamers, everyday productivity users, and system integrators looking to build a compact PC.
Despite its accessible price point, the motherboard is engineered for high-speed data handling. It supports dual-channel DDR4 RAM, allowing users to push memory speeds up to 4866 MHz (OC) for smooth multitasking and snappy system responsiveness. For storage, it features dual M.2 slots, with the primary slot leveraging high-bandwidth PCIe 4.0 connectivity to unlock the full potential of lightning-fast NVMe SSDs, drastically reducing game load times and boot sequences.
A standout update for this specific iteration is its enhanced lighting support. It comes equipped with dedicated addressable Gen 2 ARGB headers, allowing users to connect and fully customize vibrant RGB lighting strips and components. Through Asus Aura Sync, the entire system's illumination can be effortlessly synchronized with compatible peripherals to create a unified aesthetic.
Cooling and longevity are handled via intelligent hardware design. The motherboard features Fan Xpert 2+ software alongside a comprehensive array of hybrid fan headers, ensuring the system stays cool and quiet under heavy workloads. Built with Asus 5X Protection III, it incorporates a fortified PCIe SafeSlot Core, overvoltage protection, and a stainless-steel back I/O for long-term hardware durability. Complete with robust rear connectivity including USB 3.2 Gen 1 ports and HDMI/DVI-D outputs, the Prime B550M-K ARGB delivers an exceptional balance of modern styling, PCIe 4.0 speed, and rock-solid reliability.
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