REYEE NBS5100-48GT4SFP 48 PORT GIGABIT L2 + MANAGED SWITCH - ALMA Technology Sdn Bhd
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
TP-LINK JetStream 48-Port Gigabit L2 Managed Switch with 4 SFP Slots (TL-SG3452) - The source for WiFi products at best prices in Europe - wifi-stock.com