Managed Gbit 48 Ports Poe Switch with 4 SFP Optical Fiber Uplink Full Gigabit Switch Max 6kv Lightning Protection - China 48 Port Poe and Poe Switch 48 Port price | Made-in-China.com
Zyxel GS1920-48HP 48 Port POE - fletchbiz
48 Port Switches: Gigabit, PoE, & More | NETGEAR
NETGEAR 48-Port Gigabit Ethernet Unmanaged PoE+ Switch (GS348PP) - with 24 x PoE+ @ 380W, Desktop or Rackmount : Amazon.co.uk: Computers & Accessories