Overland Storage REO 4500. Native capacity: 250 GB. Burst transfer rate: 220 MB/s. Interface: iSCSI. Power requirements: 100 - 240 VAC, 47 - 63 Hz. Operating relative humidity range: 20 - 80 %, Operating temperature range (T-T): 10 - 40 °C, Storage temperature range (T-T): -40 - 60 °C