San Disk 128GB Extreme Pro SDXC UHS-I U3 Memory Card Description. The 128GB Extreme Pro UHS-I SDXC U3 Memory Card provides photographers and videographers with a high-speed SDXC memory card rated Ultra High Speed Class 3 U3 and SDXC Class 10 offering up to 95 MBs read and 90 MBs write speeds. This high-capacity card is specifically engineered for sustained RAW JPEG burst shooting modes and fast-action Full HD video recording. An advanced Error Correction Code engine offers better data integrity and card reliability during read and write. This memory card comes with downloadable Rescue PRO data recovery software good for one year of use. This software helps you restore accidentally-deleted images. The card is backed by a limited lifetime warranty.