Open Box: Images shown are from the NEW version of this item and are for reference only. The actual Open Box product may differ in packaging and included accessories, but has been tested to ensure basic functionality.
ASUS ROG STRIX B850-A GAMING WIFI R2 AMD AM5 B850 ATX motherboard with 14+2+1 power stages, DDR5 support with AEMP, WiFi 7, 4x M.2, PCIe 5.0 x16, USB 20Gbps Type-C, ASUS AI Advisor, AI Networking II
Open Box items consist of items that have been previously opened and may have either been unused or have very minimal use prior to being returned. These items are inspected to ensure they are in working condition and may undergo minor repairs. Newegg only guarantees your receipt of the Open Box product with the purchase of this item. Accessories and/or retail packaging MAY OR MAY NOT be included. Newegg will NOT send out any missing accessories, even if they are required to use all of the item's functions. Open Box items usually do not come with manufacturer or vendor warranty or technical support. However, warranty may be available if an item was never registered by a previous owner. Please contact the manufacturer directly to verify.
AMD AM5 Socket: Ready for AMD Ryzen 9000, 8000 and 7000 series desktop processors
Ultrafast Connectivity: PCIe 5.0, two M.2 slots, Realtek 2.5Gb Ethernet, Wi-Fi 7, rear USB 5Gbps Type-A, front USB 5Gbps support
Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2+
Aura Sync RGB Lighting: Onboard Addressable Gen 2 headers for RGB LED strips, easily synced with Aura Sync-capable hardware
AMD Ryzen 9000 & 7000 Series Desktop Processors 1 x PCIe 5.0 x16 slot with Q-Release Slim AMD Ryzen 8000 Series Desktop Processors 1 x PCIe 5.0 x16 slot with Q-Rlease Slim (supports PCIe 4.0 x8/x4 mode)**
PCI Express 4.0 x16
AMD B850 Chipset 1 x PCIe 4.0 x16 slot (supports x4 mode)* * PCIEX16(G4) slot (supports x4 mode) from AMD B850 Chipset shares bandwidth with M.2_3
Storage Devices
Serial ATA (SATA)
2 x SATA 6Gb/s
M.2
AMD Ryzen 7000 & 9000 Series Desktop Processors M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 5.0x4 mode) M.2_2 (Key M), type 2280/22110 (supports PCIe 4.0 x4 mode) AMD Ryzen 8000 Series Desktop Processors M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 4.0x4 mode) M.2_2 (Key M), type 2280/22110 (supports PCIe 4.0 x4/x2 mode)*
AMD B850 Chipset M.2_3 (Key M), type 2280 (supports PCIe 4.0 x4)** M.2_4 (Key M), type 2280 (supports PCIe 4.0 x4)
** M.2_3 slot shares bandwidth with PCIEX16(G4). When PCIEX16(G4) slot is operating, M.2_3 will be disabled.
SATA RAID
AMD RAIDXpert2 Technology Ryzen 9000 Series Processors: RAID 0/1/5/10 Ryzen 8000 Series Processors: RAID 0/1 Ryzen 7000 Series Processors: RAID 0/1/10
Onboard Audio
Audio Channels
ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4080* - Impedance sense for front and rear headphone outputs - Supports: Jack-detection, Multi-streaming, Front Panel MIC Jack-retasking - High quality 120 dB SNR stereo playback output and 110 dB SNR recording input - Supports up to 32-Bit/384 kHz playback on front panel Audio Features - SupremeFX Shielding Technology - Savitech SV3H712 AMP - Rear optical S/PDIF out port - Premium audio capacitors - Audio cover * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output. ** The LINE OUT port on the rear panel does not support spatial audio. If you wish to use spatial audio, make sure to connect your audio output device to the audio jack on the front panel of your chassis or use a USB interface audio device.
Onboard LAN
Max LAN Speed
2.5Gbps
Wireless LAN
Wi-Fi 802.11 be
Bluetooth
Bluetooth 5.4
Rear Panel Ports
Back I/O Ports
1 x USB 20Gbps port (1 x USB Type-C) 3 x USB 10Gbps ports (2 x Type-A + 1 x USB Type-C) 4 x USB 5Gbps ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) 1 x HDMI port 1 x Wi-Fi module 1 x Intel 2.5Gb Ethernet port 2 x Audio jacks 1 x Optical S/PDIF out port 1 x BIOS FlashBack button 1 x Clear CMOS button
Internal I/O Connectors
Onboard USB
1 x USB 10Gbps connector (supports USB Type-C) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports
Other Connectors
Fan and Cooling Related 1 x 4-pin CPU Fan header 1 x 4-pin CPU OPT Fan header 1 x 4-pin AIO Pump header 4 x 4-pin Chassis Fan headers
Miscellaneous 3 x Addressable Gen 2 headers 1 x CPU Over voltage jumper 1 x Front Panel Audio header (F_AUDIO) 1 x Power button 1 x 10-1 pin Front System Panel header 1 x Thermal Sensor header 1 x Thunderbolt (USB4) header
Physical Spec
Form Factor
ATX
Dimensions (W x L)
12.0" x 9.6"
Power Pin
1 x 24-pin Main Power connector 2 x 8-pin +12V CPU Power connector
Software Feature
BIOS Feature
256 Mb Flash ROM, UEFI AMI BIOS
Software
ROG Exclusive Software - ROG CPU-Z - Dolby Atmos ASUS Exclusive Software Armoury Crate - AIDA64 Extreme (60 days free trial) - Aura Creator - Aura Sync - GameFirst - HWiNFO - Fan Xpert 4 ASUS DriverHub ASUS GlideX TurboV Core Adobe Creative Cloud (Free Trial) Norton 360 for Gamers (60 Days Free Trial) WinRAR (40 Days Free Trial) UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode - ASUS MyHotkey