Yes, the Delkin Devices PRIME SD V60 128GB is compatible with the Fujifilm X-S20.
Delkin Devices PRIME SD V60 128GB is V60 class. Meets the floor for: 4K30 (30 MB/s floor); 4K60 (60 MB/s floor). (Peak write 105 MB/s is not evidence of sustained performance; the V60 class rating above decides this.)
“*For recording movies in 360Mbps, use a SD memory card with Video Speed Class 60 or higher.”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)