Transcend 4GB 40-pin PATA SLC. Solid-state drive capacity: 4 GB, Solid-state drive interfaces: Parallel ATA, Memory type: SLC. Read speed: 48 MB/s, Write speed: 31 MB/s. Operating voltage: 5 V, Power consumption (read): 0.9 W, Power consumption (write): 0.9 W. Mean time between failures (MTBF): 1000000 h. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -40 - 85 °C, Operating relative humidity range: 0 - 95 %