Kingston Digital Compact Flash Ultimate 600x 64 GB Flash Drive (CF/64GB-U3) Speed Rating - 600x = up to 90MB/sec. read, 90MB/sec. write Recovery Utility - data recovery software download from Media RECOVER. Windows/Mac compatible Standardized - complies with CompactFlash Association specification standards Compatible - UDMA mode 6 Economical - auto sleep mode preserves system battery life Easy - plug-and-play Guaranteed - lifetime warranty