TS-228 2-bay home & SOHO NAS for data backup and entertainment CPU ARM® v7 1.1 GHz Dual-core System memory 1GB DDR3 RAM Flash Memory 4 GB Hard Disk Drive 2 x 3.5" SATA HDDs LAN Port 1 x Gigabit RJ-45 Ethernet port USB Port 1 X USB 3.0 (Front) 1 X USB 2.0 (Rear) LED Indicators HDD 1-2, LAN, Status, USB Buttons Power/Status, USB One-Touch-Backup, reset Alarm Buzzer System warning Form Factor Mini-tower Dimensions 187.7(H) x 90(W) x 125(D) mm 7.36(H) x 3.54(W) x 4.92(D) inch Weight Net: 0.7 kg (1.54lbs) Gross: 1.88 kg (4.14lbs) Power Consumption (HDD standby mode) HDD standby:6.05W In operation:13.24W (with 2 x 2TB HDDs intalled) Temperature & Humidity 0 - 40 °C,5-95% RH Power Supply External Power Adapter 60W, 100-240V Fan Yes