Sony MRW-G2 (MRWG2) CFexpress Type A / SD Card Reader. CFexpress Type A/SD Card Reader. Optimised for the new CFexpress Type A memory cards, the CFexpress Type A/SD card reader (MRW-G2) provides SuperSpeed USB 10Gbps (USB 3.2 Gen 2) transfer speed, via its USB Type-C® connector, allowing creators to establish an efficient workflow when dealing with high-resolution image files, 4K video and other types of high-volume data. When combined with a CFexpress Type A card, it allows users to transfer data approximately 2.8 times faster than with conventional mediai. The MRW-G2 card reader can be used with CFexpress Type A and SDXC/SDHC (UHS-I and UHS-II) memory cards. Sony test conditions. Compared to Sony’s SDXC UHS-II memory card.