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Netgear GSM7248 ProSafe 48 Port Gigabit Switch
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
48-Port Managed Gigabit Ethernet Switch | Linksys | Linksys: US
S5810-48TS-P, 48-Port Gigabit Ethernet L3 PoE+ Switch, 48 x PoE+ Ports @740W, with 4 x 10Gb SFP+ Uplinks, Broadcom Chip - FS.com
Planet GS-4210-48P4S 48 Port Managed Gigabit PoE Network Switch