SFP single port pluggable hot swappable Cages with a full metal shield for EMI reduction and grounding. These SFP single port pluggable cages have various termination options and are available in a single piece or 2 prices (stock number 680-9709 bottom, stock number 680-8954 top): SFP single port cage, stock number 680-8951 - Press fit, 8 pins SFP single port cage, stock number 717-4350 - Reflow or wave solder, 3.55 mm tail SFP single port cage, stock number 717-4375 - Press fit with lightpipes SFP single port cage, stock number 717-4375 - Press fit, 20 pins SFP single port cage top, stock number 680-8954 - can be used in belly to belly applications SFP single port cage bottom, stock number 680-9709 - Reflow solder, can be used in belly to belly applications A 20 pin SMT SFP connector will need to be ordered separately for these SFP single port cages see stock numbers 680-9718 and 717-4397 typically, for suitable dust caps see stock numbers 680-9443 and 718-3385.