Amazon.com: MikroTik CRS354-48P-4S+2Q+RM Switch has 48 x 1G RJ45 Ports and 4 x 10G SFP+ Ports. 2 x 40G QSFP+ Ports for Extremely Fast Fiber Connections or Linking with Other 40 Gbps
Amazon.com: NETGEAR 48-Port Gigabit Ethernet Smart Switch (GS748T) - Managed, with 2 x 1G SFP and 2 x 1G Combo, Desktop or Rackmount, and Limited Lifetime Protection : Electronics