2 in 1 out/4 in 1 out VGA KVM switch, USB printer sharer 21UA/41UA instruction manual download
2-port USB printer sharing device 02U size: length 60mm; width: 74mm; height 18mm; 4-port USB printer sharing device 04U length: 80mm; width: 80mm; height: 18mm; details have the sharing device interface description diagram and connection diagram