Dell EMC Networking S4048-ON 48 Port 10Gig SFP+ Switch 6x 40Gig QSFP+ Dual PSUs

Versatile Connectivity: Features 48 dual-speed 1/10GbE SFP+ ports and 6 x 40GbE QSFP+ uplink ports (supports up to 72 x 10GbE connections with breakout cables). (1) Dell EMC S4048-ON 48-Port 10GbE SFP+ 6-Port 40GbE QSFP+ Switch.

eBay