Transcends 133x CF cards target users who demand superior performance & reliability from their memory cards, including professional photographers, reporters & photography enthusiasts. To ensure ultimate compatibility & speed, these cards operate in both dual-channel & Ultra DMA mode 4 modes. Transcends 133x CF cards achieve extraordinarily fast read/write speeds of up to 45MB/16MB per second on average, making consecutive shooting & non-stop video recording with todays high-performance digital single lens reflex cameras (DSLR) easier than ever. With impressive transfer speeds & enormous capacities up to 32GB, users are guaranteed to get the very best performance results from their high-tech digital equipment.