Asus Prime B850-Plus-CSM AM5 Motherboard - 4x DDR5, 3x M2, 4x Sata III, PCIe 4.0, 5.0 USB 2.0, 3.2, USB-C, RJ-45, HDMI, DisplayPort, ATX

ASUS Prime series motherboards are expertly designed to unleash the full potential of AMD Ryzen 9000 series processors. The PRIME B850-PLUS-CSM motherboard gives users and DIY PC builders a range of performance optimizations through intuitive software and firmware features. It is designed to be an advanced AI-ready PC, offering the power and connectivity needed for demanding AI applications.
ASUS Control Center Express
ASUS Control Center Express is integrated IT monitoring and management software designed to deploy faster, simplify IT operations, and improve productivity with comprehensive control and user-friendly features. ASUS Control Center Express supports over 100 ASUS motherboards to offer a high-quality, total-cost-of-ownership-optimized solution for your business needs.
AI Solutions
ASUS AI Solutions include AI Advisor as your expert technical advisor for PC performance.
Digital power design
The PRIME B850-PLUS-CSM features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient, stable power delivery for AMD processors, plus stable performance for everyday use.
Enhanced DDR5 performance
Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850-PLUS-CSM maximizes the potential of your DDR5 modules, from basic kits to extreme-speed kits.
For basic modules without EXPO support, ASUS Enhanced Memory Profile (AEMP) automatically detects the memory chips and provides optimized profiles to improve performance.
For those looking to push past factory DDR5 speeds, the PRIME B850-PLUS-CSM offers broad support for AMD Extended Profiles for Overclocking (EXPO) and a wide range of UEFI settings for further performance tuning.
Three M.2 slots (up to 128 Gbps)
The PRIME B850-PLUS-CSM offers a total of three M.2 slots, including one supporting data transfer speeds of up to 128 Gbps via PCIe 5.0, and two supporting PCIe 4.0. This enables faster boot times and application loading with OS or application drives
Cooler by design
The PRIME B850-PLUS-CSM motherboard is designed with several built-in heatsinks and a range of hybrid fan headers to keep your system cool and stable under intense workloads.
ASUS Fan Xpert 2+
ASUS Fan Xpert 2+ software provides comprehensive fan control. An Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speed below the default minimum to keep your system quiet during light tasks. Fans can also be controlled through the UEFI BIOS.
Boosting connections
This motherboard offers a versatile range of connectivity, including support for the PCIe 5.0 slot and an arsenal of USB ports including Type-C connections
Specifications:
-Socket: AMD AM5
-Chipset: AMD B850
-Compatible CPUs: AMD Ryzen series 9000, 8000, 7000
-Memory: 4 x DIMM DDR5, up to 256 GB, up to 8000+ MT/s (OC), ECC/Non-ECC, On-Die ECC
-Profiles: AMD EXPO, ASUS AEMP
-Integrated graphics:
-1 x HDMI 2.1 (up to 4K @ 60 Hz)
-1 x DisplayPort 1.4 (up to 8K @ 30 Hz)
-Expansion slots:
-1 x PCIe 5.0 x16 (Ryzen 9000/7000)
-1 x PCIe 4.0 x16 (Ryzen 8000)
-1 x PCIe 4.0 x16 (x4 mode)
-Storage:
-3 x M.2 (PCIe 5.0/4.0 depending on CPU)
-4 x SATA 6Gb/s
-RAID: 0/1/5/10 (Ryzen 9000), 0/1 (Ryzen 8000), 0/1/10 (Ryzen 7000)
-Ethernet: Realtek 2.5Gb, ASUS LANGuard
-Rear USB (8 ports):
-3 x USB 3.2 Gen2 Type-A
-1 x USB 3.2 Gen2 Type-C
-2 x USB 3.2 Gen1 Type-A
-2 x USB 2.0 Type-A
-Front USB (7 ports):
-1 x USB 3.2 Gen1 Type-C
-1 x USB 3.2 Gen1 header (2 ports)
-2 x USB 2.0 headers (4 ports)
-Audio: Realtek 7.1, up to 24-bit/192 kHz, audio shielding, premium capacitors, dedicated PCB layers
-Internal connectors:
-1 x CPU Fan, 1 x CPU OPT, 1 x AIO Pump
-4 x Chassis Fan headers
-1 x 24-pin ATX connector
-1 x 8-pin + 1 x 4-pin CPU power
-RGB: 3 x addressable Gen2 RGB headers
-Special features:
-ASUS 5X Protection III, SafeSlot, pre-mounted I/O
-BIOS FlashBack, Q-DIMM, Q-Slot, Q-LED Core
-Flexible M.2 heatsink, VRM thermal design
-Included software: Armoury Crate, Aura Sync, Fan Xpert 2+, TurboV Core, AI Advisor, CPU-Z, Norton 360 (60 days), Adobe CC (trial), WinRAR (40 days)
-BIOS: UEFI AMI, 256 Mb Flash ROM
-Remote management: ASUS Control Center Express (ACCE)
-Included accessories:
-2 x SATA 6Gb/s cables
-3 x M.2 screws
-1 x M.2 rubber pad
-1 x quick start guide
-1 x ACC Express activation card
-Compatible operating system: Windows 11 / Windows 10 64-bit
-Form factor: ATX (30.5 x 24.4 cm)