TP-LINK JetStream 48-Port Gigabit and 4-Port 10GE SFP+ L2+ Managed Switch with 48-Port PoE+ (TL-SG3452XP) - The source for WiFi products at best prices in Europe - wifi-stock.com
D-link 48-Port 10/100/1000 Gigabit Smart Switch Black | Techinn
SonicWall Switch SWS14-48FPOE - Switch - managed - 48 x 10/100/1000 (PoE+) + 4 x 10 Gigabit SFP+ - rack-mountable - PoE+ (740 W) - with 1 year 24x7 Support | Dell USA