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Supermicro X12STH-F

Micro-ATX LGA1200/C256 board for Xeon E-2300 or Pentium, ECC UDIMM and IPMI. This record is restricted to the exact printed SKU; confirm the physical PCB revision before installation or firmware service.

Original local schematic of Supermicro X12STH-F; not a product photograph or dimensional drawing
ORIGINAL LOCAL SCHEMATIC // NOT TO SCALE

MODEL / REVISION: X12STH-F is the exact manufacturer model/SKU documented here. Match the PCB revision and assembly label printed on the physical board before choosing firmware or CPU support; revision-specific differences must not be inferred from a similar model or suffix.

Specifications

Exact board / SKUSupermicro X12STH-F — exact product suffix retained; verify PCB revision from board silkscreen.
PCB revisionThe manufacturer reference identifies this exact model SKU, not a single board assembly revision. Read the revision silk-screen on the physical PCB; no unverified revision number is assumed.
CPU socket / platformOne Intel Xeon E-2300-series or supported 10th-generation Pentium in LGA1200 (Socket H5), within the vendor CPU list and 95 W limit.
Chipset / controllerIntel C256
Form factorMicro-ATX.
Memory / ECCFour DDR4 slots; up to 128 GB ECC unbuffered UDIMM at DDR4-3200; no RDIMM.
PCIe topology1 PCIe 4.0 x16; 1 PCIe 4.0 x4 electrical in x8 mechanical; 1 PCIe 3.0 x4 electrical in x8 mechanical.
StorageEight SATA 6 Gb/s via C256 and one M.2 PCIe 3.0 x4 socket.
Network / BMCDual Intel 1GbE; IPMI 2.0 BMC/KVM and dedicated management LAN.
Firmware / platform supportUse X12STH-F BIOS/BMC and CPU support resources only; confirm CPU stepping and minimum BIOS.

Compatibility and revision notes

Use X12STH-F BIOS/BMC and CPU support resources only; confirm CPU stepping and minimum BIOS. Populate memory only in the documented module class and channel order; ECC does not make UDIMM/RDIMM classes interchangeable. Check chassis clearance, cooler, power connectors, risers, storage cabling and BMC network isolation against the model manual.

Socket shape and chipset branding alone do not guarantee CPU compatibility. Confirm exact CPU/stepping, minimum BIOS, memory QVL, PCIe lane sharing and board revision before service.

Preservation and repair

Record PCB silk-screen, serial label, BIOS/BMC versions, MAC addresses, attached risers and cables, and test conditions. Use ESD-safe handling and the vendor socket procedure; never apply firmware for a visually similar SKU.

Sources & further reading

  1. Supermicro X12STH-F — manufacturer product specificationsPrimary model-specific reference for board platform, memory, expansion and onboard features.
  2. Supermicro X12STH-F — manufacturer manual and support resourcesConsult matching manual, CPU/memory data and BIOS/BMC resources for exact product and PCB revision.

Manufacturer documentation for the exact product and printed PCB revision takes precedence over this summary.