No, the Sony A7C II is not compatible with the Sony Tough M 256GB CFexpress Type A.
Sony's own Help Guide for the A7C II states the camera supports only SD memory cards (UHS-II compatible) -- no CFexpress slot of any type. CFexpress Type A physically cannot be inserted -- still incompatible, now backed by a real citation instead of none.
What works instead
See all compatible camera for the Sony A7C II →“This camera supports only SD memory cards (UHS-II compatible).”
Last verified:
Confidence: inferred