ASUS Officially Details Pro WS B850M-ACE SE: A Compact Workstation Board with 10GbE Networking

Following its initial tease at COMPUTEX 2025, where only a brief render was shown, ASUS has now fully unveiled the Pro WS B850M-ACE SE motherboard. The company has updated its official website with high-resolution images and a complete list of technical specifications, giving us a comprehensive look at this new workstation-focused board.

Based on information first spotted by X user @momomo_us, the official product page confirms the motherboard's key features and design.

The ASUS Pro WS B850M-ACE SE is built on an 8-layer PCB and features a distinctive layout, common in the Pro WS line, where the motherboard and memory slots are rotated 90 degrees counter-clockwise. Power is delivered through 8+4 Pin EPS CPU connectors. A critical feature for professionals is the inclusion of an onboard ASPEED AST2600 Baseboard Management Controller (BMC) SoC, enabling robust remote management capabilities.

The motherboard is packed with modern features for high-performance builds. Here’s a detailed look at its expansion capabilities:

  • Memory:

    • 4× DDR5 UDIMM (ECC & Non-ECC), supporting overclocking speeds of 8000+ MT/s.

  • PCIe Slots:

    • 1× PCIe 5.0×16 (CPU direct);

    • 1× PCIe 4.0×4 (Chipset, physical full-length).

  • Storage:

    • 2× M.2 2280, PCIe 5.0×4 (CPU direct);

    • 1× MCIO, PCIe 5.0×4 (CPU direct);

    • 1× U.2 (PCIe 3.0×4) / 4× SATA III 6Gbps (Chipset).

  • Network:

    • Wired:

      • 1× Realtek 10GbE LAN;

      • 1× Intel 2.5GbE LAN;

      • 1× Realtek 1GbE LAN (dedicated for BMC & IPMI).

  • Audio:

    • Realtek 7.1 Channel CODEC.

  • External I/O:

    • Internal Expansion: 1× USB-C 20Gbps header, 1× USB 5Gbps header (for two ports), 2× USB 2.0 (480Mbps) headers (for four ports), 1× USB-A 2.0 (480Mbps) port;

    • Rear Ports: 3× USB-A 10Gbps, 2× USB-C 10Gbps (one with DP Alt support), 2× USB-A 2.0 (480Mbps), 1× DisplayPort, 1× VGA, 1× HDMI, 1× 10GbE RJ45, 1× 2.5GbE RJ45, 1× 1GbE RJ45, 2× audio jacks.

A standout feature is its comprehensive networking setup, headlined by a Realtek 10GbE LAN port, likely the RTL8127 model that is also appearing on other new motherboards. This is complemented by an Intel 2.5GbE port for general use and a dedicated Realtek 1GbE port for the BMC, ensuring network connectivity is both fast and versatile.

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