ASUS RS300-E11-WOCPU012Z 1U rackmount barebone server, LGA 1200, 4 DDR4 slots, 128 GB max, 4×3.5" bays

1U LGA 1200 barebone server

The ASUS RS300-E11-WOCPU012Z is a 1U rackmount barebone system built around the Intel C252 chipset and an LGA 1200 socket. It accepts a single Intel Xeon E-2300 or Pentium processor, with four 288-pin DDR4 UDIMM slots supporting up to 128 GB in dual-channel mode at 3200, 2933 or 2666 MT/s. No CPU or memory is installed.

Four 3.5-inch bays and three PCIe slots

The chassis provides four internal 3.5-inch drive bays and six SATA 600 ports for storage. Expansion includes one full-height PCIe 4.0 x16 slot that drops to x8 when the second slot is populated, one half-height PCIe 4.0 x8 slot, and one proprietary PCIe 3.0 x4 right-angle slot. Dual Intel I210-AT controllers deliver two 1 Gigabit RJ45 ports, while front and rear panels offer USB 3.2 Gen1 and Gen2 ports plus a COM header.

128 GB DDR4 ceiling and single-socket limit

Memory capacity tops out at 128 GB of UDIMM across four slots, giving ample headroom for virtualisation or database workloads that fit in a single-socket design. The platform supports only one processor, so multi-socket scaling is not possible. The proprietary PCIe x4 slot becomes unavailable when an NVME drive is installed, reducing expansion flexibility for storage-heavy builds.