Lenovo ThinkCentre M75s Gen 2 Small Form Factor upgrades

Released 2020 · on sale

Lenovo ThinkCentre M75s Gen 2 Small Form Factor (machine types 11RA/11JB), AMD Ryzen 5000 PRO desktop platform. The CPU is socketed (AM4) and the memory is user-replaceable (no soldered RAM), so no CPU/RAM omission notes apply. Confidence is reduced: the researcher flagged that machine types, CPU socket/TDP and bay/thickness limits were not yet verified against the PSREF and HMM, so RAM slot count, maximum total memory, 2.5" bay thickness and any capacity caps should be confirmed before buying parts.

Upgrade guide → What fits, step by step, and official documents.

2x DDR4-3200 UDIMM (up to 32GB each): 2 × DDR4 DIMM · up to 128 GB total · 3200 MT/s
3.5"/2.5" bays + M.2 2280 slot (SATA/NVMe): SSD / HDD 3.5" / 2.5" / M.2 2280 (SATA / NVMe)
AM4 socket (Ryzen 5000 PRO, 65W): AM4 · Ryzen 5000 · max 65 W

Slot map

Schematic of the upgradeable slots (not to scale). Check the owner's manual for their exact positions.

2x DDR4-3200 UDIMM (up to 32GB each) 2 × DDR4 DIMM · up to 128 GB total · 3200 MT/s

Uses standard non-ECC, unbuffered DDR4 UDIMMs; ECC/RDIMM modules are not supported. Modules run at DDR4-3200. Count of free slots and the exact maximum total memory should be double-checked against the PSREF/HMM before purchase, as sources were not fully verified. No memory is soldered to the board.

No compatible offers right now.

3.5"/2.5" bays + M.2 2280 slot (SATA/NVMe) SSD / HDD 3.5" / 2.5" / M.2 2280 (SATA / NVMe)

The M.2 slot accepts a 2280 NVMe or SATA SSD; the 2.5"/3.5" bay uses SATA 6Gb/s and may require a drive caddy/rails and SATA data+power cables for added drives. No manufacturer-documented per-bay capacity limit found. 2.5" bay thickness limit (7 vs 9.5 mm) could not be confirmed in the sources.

No compatible offers right now.

AM4 socket (Ryzen 5000 PRO, 65W) AM4 · Ryzen 5000 · max 65 W

Socketed AM4 desktop CPU, shipped with Ryzen 3/5/7 PRO 5000 G-series APUs. Lenovo's BIOS/whitelist and 65W thermal design limit what is officially supported; only 65W (non-X, typically G-series/APU) processors are covered. Non-listed CPUs may fit physically but are unsupported by the vendor BIOS.

No compatible offers right now.