Cisco Catalyst 3560 12 Port Gigabit Switch POE - WS-C3560CX-12PD-S
Amazon.com: NETGEAR 12-Port 10G Multi-Gigabit Plus Switch (XS512EM) - Managed, with 2 x 10G SFP+, Desktop or Rackmount, and Limited Lifetime Protection : Electronics
3Com (3CR1766091US) 12-Ports External Switch Managed stackable for sale online | eBay