Kingston Technology 4096MB CompactFlash Elite Pro Card (Single Level Cell). Internal memory: 4096 MB, Flash card type: CompactFlash (CF), Read speed: 10 MB/s. Data retention: 10 year(s). Input voltage: 5 V. Operating temperature range (T-T): 0 - 60 °C, Storage temperature range (T-T): -20 - 85 °C