TP-LINK ADSL2+ Modem. Upstream data rate: 3.5 Mbit/s, Downstream data rate: 24 Mbit/s. Operating temperature range (T-T): 0 - 40 °C, Operating relative humidity range: 10 - 90 %, Storage temperature range (T-T): -40 - 70 °C. Connectivity LEDs: LAN, ADSL, ACT. Dimensions (WxDxH): 165 x 108 x 28 mm