Standards : Cisco SF90-24 10/100 Networking Switch 24-Port 802.3 10BASE-T Ethernet 802.3u 100BASE-TX Fast Ethernet 802.3ab 1000BASE-T Gigabit Ethernet 802.3z Gigabit Ethernet 802.3x flow control 802.1p priority 802.3az, Energy Efficient Ethernet   Environmental Dimensions : W x H x DSF90-24: 11 x 1.75 x 6.7 inches (279.4 x 44.5 x 170 mm) Unit weight : SF90-24: 2.8 lb. (1.27 kg) Power: 100–240VAC, 50–60 Hz, internal, universal   Certifications : UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A Operating temperature : 32° to 104°F (0° to 40°C) Storage temperature : –4° to 158°F (–20° to 70°C) Operating humidity : 10% to 90%, relative, non-condensing Storage humidity : 10% to 90%, relative, non-condensing   ----------------------------------------------------------------- - 1 Year Replacement Warranty - Expert Technical Team - 24x7 Support - Quality Assured - Service all over Bangladesh