Yes, the Sony FX3 is compatible with the Sony Tough M 256GB CFexpress Type A.
Sony Tough M writes at 700 MB/s. FX3 4K60 floor is 400 MB/s via CFexpress Type A slot. Clears with headroom. Same brand — Sony's recommended pairing.
“Sony FX3 Help Guide: CFexpress Type A (VPG200 or higher) supported for all formats including XAVC S-I 4K at 600Mbps and S&Q XAVC S-I 4K at 1200Mbps.”
Last verified:
Confidence: inferred