WS-C3750G-48PS-E Cisco Catalyst 3750G 48-Port Gigabit PoE Switch

WS-C3750G-48PS-E is a Cisco Catalyst 3750G PoE switch: 48 10/100/1000 copper ports carry IEEE 802.3af and Cisco prestandard Power over Ethernet, and four SFP-based Gigabit Ethernet ports sit beside them. The -E suffix means the IP Services feature set, which adds full IPv6 dynamic routing to this 1 RU stackable multilayer unit.

Power delivery is the point of this SKU. The 48-port PoE units can feed 24 ports at 15.4 W, 48 ports at 7.7 W, or any combination in between. With the maximum PoE load attached, measured draw is 541 W of switch power and 370 W of PoE power; at 5 percent throughput with 50 percent PoE load the figures are 331 W and 174 W. The internal supply takes 100 to 240 VAC at 4.0 to 8.0 A and is sized at 590 W, and the RPS connector at the back accepts a Cisco RPS 2300 (PWR-RPS2300) or RPS 675 (PWR675-AC-RPS-N1=).

Fan noise climbs with the number of active PoE ports, from 52 to 58 dB, and MTBF is 141,005 hours. The chassis measures 4.4 x 44.5 x 40.9 cm (1.73 x 17.5 x 16.1 in) and weighs 7.0 kg (15.5 lb). It forwards 38.7 Mpps with 128 MB of DRAM and 32 MB of flash, and stacks with other Catalyst 3750 and 3750-E units through StackWise cabling. The 48-port Gigabit unit with no PoE and the IP Base image is the WS-C3750G-48TS-S. Further Catalyst hardware is in Cisco switches.