Cisco WS-X6148-45AF-UG=. Networking standards: IEEE 802.3, IEEE 802.3u, IEEE 802.3af. Dimensions (WxDxH): 356 x 406 x 30 mm. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -40 - 75 °C, Operating relative humidity range: 10 - 90 %. Safety: UL 1950, CSA-C22.2 No. 950, EN 60950, IEC 950, AS/NZS 3260, IEC 825, EN 60825, 21CFR1040