Cisco Catalyst 3750G 48 Port Gigabit Switch - WS-C3750G-48TS-S
TP LINK TL SG1048 48 Port Gigabit Ethernet Switch Limited Lifetime Protection Plug and Play Sturdy Metal w Shielded Ports Rackmount Fanless Traffic Optimization Unmanaged Black - Office Depot
Amazon.com: NETGEAR 48-Port Gigabit Ethernet Smart Switch (GS748T) - Managed, with 2 x 1G SFP and 2 x 1G Combo, Desktop or Rackmount, and Limited Lifetime Protection : Electronics