Operating in blade servers, switches, routers, and add/drop multiplexers, Pulse's SFP032-L 2x8 SFP cage connects transceivers and shields them from EMI. The 25.50-mm H × 63.25-mm D × 114.25-mm W product has a 2-piece structure to prevent deforming during press fitting; handles speeds up to 5 Gb, and withstands temperatures from -40°C to 85°C. Holes in the cage allow air circulation and heat transfer. The tray-packaged unit can handle optical transceiver links and transceivers configured as traditional copper RJ45 connectors. From ~$40 each.