GS-5220-24UP4XR L2+ 24-Port 10/100/1000T Ultra PoE + 4-Port 10G SFP+ Managed Switch with System Redundant Power (400W) - Planet Technology USA
Aruba 3810M JL430A | HP Switch | Aventis Systems
Amazon.com: NETGEAR 24-Port 10G/Multi-Gigabit Plus Switch (XS724EM) - Managed, with 2 x 10G SFP+, Desktop or Rackmount, and Limited Lifetime Protection : Electronics