Integral CFast 2.0 cards have the performance for a new generation of high performance DSLRs and video cameras - featuring write speeds of up to 540MB/s (3600X) and datatransfer (read) speeds of up to 550MB/s. Save time when moving large image or video files from your camera to your computer. Capture the highest quality 4K video in DSLRs and camcorders. Integral CFast 2.0 memory cards can keep up with the burstmode shooting of professional-grade. Integral CFast 2.0 cards have high reliability, low power consumption and high shock resistance, all delivered in a small form factor and SATA interface. CFast 2.0 leverages the SATA-3 interface for higher performance based on a computing industry storage interface and protocol. DEVSLP - Provides a low power sleep mode that helps preserve battery life when the card is not in use. Specification Type: CFast 2.0 Read Speed: 540MB/s Write Speed: 520MB/s Interface: 7 + 17-Pin Compliant Standard: CompactFlash Association Min Operating Temperature: -0°c Max Operating Temperature: +70°c