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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
Amazon.com: YuanLey 48 Port Gigabit PoE Switch Unmanaged with 2 1000Mbps SFP Uplink, 50 Port 802.3af/at 800W High Power PoE+ Network Switch, Metal Rackmount Power Over Ethernet Switch : Electronics
Amazon.com: NETGEAR 48-Port Gigabit Ethernet Smart Managed Pro Switch with 4 SFP (GS348T) : Everything Else
Amazon.com: TP-Link 48 Port Gigabit Ethernet Switch | Plug and Play | Sturdy Metal w/ Shielded Ports | Rackmount | Fanless | Limited Lifetime Protection | Traffic Optimization | Unmanaged (TL-SG1048) , Black : Electronics