Freecom Classic SL Network Hard Drive 250GB, Classic SL Network Drive. Hard drive capacity: 250 GB, Hard drive rotational speed: 7200 RPM, Hard drive size: 88.9 mm (3.5 "). Colour of product: Black. Weight: 750 g, Width: 215 mm, Depth: 115 mm. Operating temperature range (T-T): 5 - 55 °C, Storage temperature range (T-T): -40 - 65 °C. Average latency: 4.2 ms, Mean time between failures (MTBF): 50000 h, Minimum processor: Pentium II 233MHz