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ASUS Pro WS B850M-ACE SE AMD AM5 B850 mATX MicroATX Business motherboard, PCIe 5.0 x 16, DDR5, 2x PCIe 5.0 M.2, PCIe 5.0 MCIO, U.2, 10G & 2.5G LAN, USB4, ASUS Control Center Express Remote Management
- Ready for Advanced AI PCs: Built to power next-gen AI workloads with robust performance, ultrafast connectivity, and future-proof architecture.
- AMD AM5 Socket Support: Compatible with AMD Ryzen 9000/8000/7000 Series and AMD EPYC 4005 Series processors.
- Ultrafast Connectivity: Two PCIe 5.0/4.0 x16 slot (one at x4), 10 Gb & 2.5 Gb LAN ports, two PCIe 5.0 x4 M.2 slots, front USB 20Gbps Type-C and MCIO NVMe support.
- Server-grade IPMI Remote Management: Supports onboard BMC AST2600, along with ASUS Control Center Express IT management software for real-time monitoring and management.
- Proven Reliability & Stability: Extensively validated with broad compatibility, a comprehensive QVL, and tested for 24/7 operation.
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PRO WS B850M ACE SE
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 3 years
- Limited Warranty period (labor): 3 years
- Read full details
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Newegg.com's 30-Day Return Policy.
- Read full return policy for details.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-510-739-3777
- Support Website
- View other products from ASUS
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The ASUS Pro WS B850M-ACE SE is a Micro-ATX AM5 workstation motherboard for Ryzen 9000, 8000 and 7000 or EPYC 4005 processors, suited to AI, content-creation and professional systems that need PCIe 5.0, dual high-speed networking and remote management.
Recommended For
- Homelab operators or small teams building a headless server who want to monitor and manage the system remotely through onboard BMC/IPMI rather than relying on physical access.
- Workstation builders who need a compact Micro-ATX system for a wired office or studio, with 10Gb and 2.5Gb networking for large local file transfers or networked storage.
- Small-server and virtualization builders who want an AM5 workstation board with remote management and room for a GPU plus a compatible storage or network controller; check card dimensions and slot clearance before buying.
- Developers or workstation users building a compact local AI or compute system who want an AM5 platform with PCIe 5.0 graphics connectivity, fast wired networking, and remote system management.
Real-World Use Scenarios
- A creator building a compact desk-side workstation can pair an AM5 processor and discrete graphics card with fast NVMe storage; the Micro-ATX format keeps the build smaller while supporting demanding content-creation workflows.
- Someone running local AI models can build a workstation around a Ryzen 9000-series CPU and suitable graphics card; ASUS says its AI Cache Boost setting can improve some local LLM workloads, but results depend on the CPU, memory tuning, and workload.
- An IT admin managing a workstation or small server remotely can use the onboard BMC and dedicated management Ethernet to monitor and manage the system without relying on its main operating-system network connection.
- A video editor or engineering team moving large project files to shared storage can connect over 10Gb Ethernet; the practical transfer benefit depends on the NAS or network switch also supporting a compatible high-speed connection.
- A home-lab builder setting up a modest virtualization host can use the board’s remote-management features and, with a compatible processor and memory configuration, ECC support; it is a better fit when remote administration matters more than fitting many onboard M.2 drives.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | AM5 workstation and business systems needing DDR5 memory, PCIe expansion, flexible NVMe and SATA storage, multi-speed Ethernet, and remote-management connectivity |
| Processor And Chipset | AMD AM5 socket for Ryzen 9000, 8000, and 7000 Series desktop processors and EPYC 4005 Series processors, with an AMD B850 chipset |
| Memory Configuration | Four DDR5 DIMM slots, dual-channel, up to 256GB; supports DDR5 5600 and DDR5 8000, AMD EXPO, and ECC unbuffered memory |
| Expansion And Storage | PCIe slot modes vary by processor: Ryzen 9000/7000 and EPYC 4005 support one PCIe 5.0 x16 slot at x16; Ryzen 8000 supports one PCIe 4.0 x16 slot at x8/x4; the B850 chipset provides one PCIe 4.0 x16 slot at x4. Two 2280 M.2 Key M slots support PCIe 5.0 x4 with Ryzen 9000/7000 and EPYC 4005, or PCIe 4.0 modes with Ryzen 8000. The PCIe 5.0 MCIO connector shares bandwidth with M.2_2, disabling that slot when MCIO is in use; Ryzen 8000 uses PCIe 4.0 x4/x2 modes for MCIO. Four SATA 6Gb/s ports are available. U.2 supports PCIe 3.0 x4 through a separately purchased SFF-8643 adapter; enabling U.2 disables the SATA ports |
| Networking And Remote Management | 10Gb Ethernet, 2.5Gb Ethernet, and a dedicated 1Gb management LAN for AST2600; the board includes an ASUS Control Center Express activation key card |
| Ports And Connectivity | Rear connections include three USB 10Gbps Type-A, two USB 10Gbps Type-C (one supports DisplayPort video output), two USB 2.0 Type-A, DisplayPort, VGA, HDMI, two audio jacks, and Clear CMOS. Headers provide two additional USB 5Gbps ports and four USB 2.0 ports; a USB 2.0 Type-A port supports BIOS FlashBack. Also includes a Thunderbolt (USB4) header |
| Audio | Realtek 7.1-channel HD audio with jack detection, multi-streaming, front-panel jack retasking, and playback up to 24-bit/192kHz; 32-bit/192kHz is not supported for 7.1-channel audio |
| Power And Cooling | 24-pin main power, 8-pin and 4-pin CPU power connectors, one CPU fan header, one CPU optional fan header, three chassis fan headers, and one W_PUMP+ header |
| BIOS And Board Features | 512Mb UEFI AMI BIOS with BIOS FlashBack, Clear CMOS, and ASUS board-design, protection, and diagnostic features |
| Form Factor And Physical Details | Micro ATX, 9.6 × 9.6 inches; black |
| Model Identifiers | ASUS Pro WS B850M-ACE SE |



















