Yes, the SanDisk Extreme microSDXC UHS-I 128GB is compatible with the Sony A7C II.
Sony A7C II 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 including this camera's top-tier mode requiring Video Speed Class 90 (90 MB/s).
Limitation
Cannot record 4K60 -- this camera's spec requires Video Speed Class V60, this card is V30 class. The bundled microSD adapter provides physical fit only; it does not change the card's class rating. Works for 4K30 modes.
“le bit rate when recording Supported memory card XAVC HS 4K 200Mbps SDHC/SDXC card (U3 or higher) XAVC S 4K 200Mbps SDHC/SDXC card (U3 or higher) XAVC S HD 100Mbps SDHC/SDXC card (U3 or higher) XAVC S”
Last verified:
Confidence: high confidence