IBM RackSwitch G8264 7309-HC3 48 x 10GbE SFP+ 4 x40GbE QSFP+ 1U RackMount Switch | eBay
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S5800-48MBQ, 48-Port Ethernet L3 Switch, 48 x 100M/1000M/2.5GBASE-T/Multi-Gigabit, with 4 x 25Gb SFP28 and 2 x 40Gb QSFP+, Support MLAG - FS.com United Kingdom
2 x 40GbE QSFP+ Ports 24 Port Gigabit Switches - broadbandbuyer.com