48-Port L3 Fully Managed Pro Switch, Gigabit Ethernet, Stackable, 4x 10Gb SFP+ Uplinks - FS.com Deutschland
48 Port MPO LGX Fiber Patch Panel 2U Rack Mount Multimode
48-Port Managed Gigabit PoE+ Switch with 4 10G SFP+ Uplinks 740W TAA Compliant | Linksys: US
Introduction to 48 Port Gigabit SFP Switch
48 Port Switches: Gigabit, PoE, & More | NETGEAR
Signamax High Density 1U 48 Port Fiber Optic Patch Panels
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