Ubiquiti Networks, UniFi, 48 Port Managed PoE Switch with 32 PoE+ (802.3at) and 4 1GB SFP Ports, USW-48-POE - WLANMall
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 Gigabit Ethernet PoE+ Layer 2+ Managed Switch with Four 10G SF – UltraPoE
48-Port Managed Gigabit PoE+ Switch with 4 10G SFP+ Uplinks 740W TAA Compliant | Linksys: US