Yes, the Delkin Devices PRIME SD V60 128GB is compatible with the Sony FX30.
Delkin PRIME SD is a Video Speed Class V60 card (280/105 MB/s rated). The FX30's SD floor is V60 for standard XAVC HS/S 4K and V90 for the higher-bitrate XAVC S-I 4K -- V60 clears the standard mode but not the higher-bitrate one.
Limitation
Does not meet Sony FX30's higher-bitrate XAVC S-I 4K SD-slot mode (requires Video Speed Class V90) -- this card is V60. Works for standard XAVC HS/S 4K and all lower-bitrate SD-slot modes.
“XAVC S-I 4K 600Mbps CFexpress Type A memory card (VPG200 or higher) SDXC V90 or higher”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)