Yes, the Fujifilm X-S20 is compatible with the SanDisk Extreme microSDXC UHS-I 128GB.
Fujifilm X-S20 has a full-size SD card slot. SanDisk Extreme microSDXC UHS-I 128GB (real write speed 130 MB/s) fits via the bundled microSD-to-SD adapter and clears every recording mode this camera's own page lists a card-speed floor for (none exceed Video Speed Class 60 / 60 MB/s).
Limitation
Cannot record at 360 Mbps (X-S20's highest 4K bitrate mode) -- requires Video Speed Class V60 or higher, this card is V30 class. The bundled microSD adapter provides physical fit only; it does not change the card's class rating. Works for all lower-bitrate 4K30 and 1080p modes.
“rate Bitrate [6.2K(3:2)] 6240 x 4160 29.97p/25p/24p/23.98p 360Mbps/200Mbps/100Mbps/50Mbps [DCI4K(17:9)] 4096 x 2160 59.94p/50p/29.97p/25p/24p/23.98p 360Mbps/200Mbps/100Mbps/50Mbps [4K(16:9)] 3840 x 2”
Last verified:
Confidence: high confidence