Linksys 12 Volt Power Over Ethernet Adapter Kit. Cabling technology: Cat 5, Power over Ethernet (PoE): 12 V. Dimensions (WxDxH): 80 x 22 x 56 mm, Weight: 75 g. Certification: FCC Class B. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -20 - 70 °C, Storage relative humidity range: 5 - 90 %