The ThinkCentre M70q Gen 2 needs single-sided SSDs in its 1-liter chassis

This is a 1-liter chassis — roughly 179 × 183 × 34.5 mm — so space is tight everywhere. The 2.5-inch bay is limited to 7 mm drives, and the M.2 slot only has clearance for single-sided SSDs. Double-sided models simply won’t fit.