ASUS PRIME B550-PLUS AM4 ATX Motherboard – DDR4 4600 (OC), PCIe 4.0 x16, 2x M.2 PCIe 4.0, GbE LAN, USB-C 10Gbps | 90MB14U0-M0EAY0

Tune It Your Way

Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550-PLUS packs flexible tools to tune every aspect of your system — UEFI BIOS, EPU power saving, Fan Xpert 4 cooling control and Digi+ VRM management — enabling you to tweak performance settings to perfectly match the way you work and maximize your productivity.

Cool to the Core

Prime B550 series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads. Two massive VRM heatsinks with thermal pads underneath improve heat transfer from the MOSFETs and chokes for better cooling performance.

Build on a Solid Foundation

The Prime B550-PLUS provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options. The PCIe 4.0 x16 slot handles next-generation graphics cards, while the PCIe 4.0 M.2 slot supports up to 22110 NVMe SSDs with RAID support for an incredible performance boost — up to 64Gbps — alongside a second PCIe 3.0 M.2 slot and six SATA 6Gb/s ports with RAID 0/1/10. DDR4 memory scales to 4600MHz (OC) with up to 128GB across four dual-channel DIMM slots, and AMD 2-Way CrossFireX multiplies graphics horsepower.

Little Things Make a Big Difference

Prime B550 series adds the nuanced details that improve every experience. Outstanding Realtek ALC887 7.1-channel audio features audio shielding separating analog and digital signal domains, separate PCB layers for left and right tracks ensuring minimal crosstalk, premium Japanese capacitors for exceptional fidelity, a unique de-pop circuit, and an optical S/PDIF output. ASUS 5X Protection III provides DIGI+ VRM, enhanced DRAM overcurrent protection, ESD Guards, LANGuard, overvoltage protection, SafeSlot Core and a stainless-steel back I/O, while Aura Sync standard and addressable Gen 2 RGB headers let you create a uniquely personal look.

Connectivity

The rear panel offers USB 3.2 Gen 2 at up to 10Gbps in both Type-A and Type-C form, four USB 3.2 Gen 1 ports and two USB 2.0 ports, with front-panel USB 3.2 Gen 1 and USB 2.0 headers adding case connectivity. Realtek RTL8111H Gigabit LAN with ASUS LANGuard provides dependable wired networking. Display outputs include DisplayPort 1.2 and HDMI 2.1 (4K@60Hz), a Thunderbolt header opens expansion options, and Armoury Crate with Aura Sync and AI Suite 3 with TurboV EVO provide complete software control.

Key Features

• AMD AM4 socket for Ryzen 5000 Series / 4000 G-Series / 3000 Series
• AMD B550 chipset · PCIe 4.0 ready
• 4x DDR4 DIMM, Dual Channel, Max 128GB, DDR4 4600 (OC)
• 1x PCIe 4.0 x16 + 1x PCIe 3.0 x16 (x4) + 3x PCIe 3.0 x1 · AMD 2-Way CrossFireX
• 2x M.2 (1x PCIe 4.0 x4/SATA + 1x PCIe 3.0 x4/SATA, up to 22110) + 6x SATA 6Gb/s, RAID 0/1/10
• USB 3.2 Gen 2 Type-A + Type-C (10Gbps) rear + 4x USB 3.2 Gen 1 + 2x USB 2.0
• Realtek RTL8111H Gigabit LAN + ASUS LANGuard
• Realtek ALC887 7.1 audio, optical S/PDIF out, premium Japanese capacitors
• DisplayPort 1.2 + HDMI 2.1 (4K@60Hz)
• Fan Xpert 4, AI Suite 3, TurboV EVO, EPU, UEFI BIOS
• ASUS 5X Protection III, SafeSlot Core, Aura Sync RGB

Spec Sheet

Perfect For

• Ryzen 5000 Series upgrades and builds on the proven AM4 platform
• Budget-friendly gaming systems wanting PCIe 4.0 graphics and NVMe storage
• Daily productivity PCs needing stable power and intuitive tuning tools
• Builders wanting USB-C 10Gbps and HDMI 2.1 output without premium pricing

What’s Included

• PRIME B550-PLUS motherboard
• 1x I/O shield
• 2x SATA 6Gb/s cables
• 1x Supporting DVD
• M.2 SSD screw package
• User’s manual

The solid foundation for AM4 — PCIe 4.0 graphics and storage, DDR4 4600 (OC), USB-C 10Gbps and comprehensive tuning controls on the ASUS PRIME B550-PLUS, built to ASUS 5X Protection III standards.