No, the Sony FX30 is not compatible with the Sony Tough G 128GB CFexpress Type B.
Sony FX30 takes CFexpress Type A cards only (or SD) -- per Sony's own Help Guide, CFexpress Type B memory cards cannot be used. Sony Tough G is Type B, a different physical form factor that does not seat in the FX30's slots.
What works instead
See all compatible camera for the Sony FX30 →“CFexpress Type B memory cards cannot be used.”
Last verified:
Confidence: inferred