| C9900-E187 | IP65 connector M12 in the wiring area of a CP32xx, CP37xx or CP72xx for one USB 2.0 port |
| C9900-E190 | USB-A in the wiring area of a CP32xx, CP37xx or CP72xx for one USB 2.0 port, including covering cap IP65 |
| C9900-E169 | 2-port USB socket inside the Control Panel or Panel PC backplane, DIN 8-pin with screw-on cap IP65 with adapter cable from DIN 8-pin to 2 x USB, inside a Panel PC backplane only 2 USB ports are possible. |
| C9900-E215 | 1-port USB socket inside the Control Panel or Panel PC backplane, USB-A socket with screw-on cap IP65, inside a Panel PC backplane only one USB socket is possible. |
| C9900-E283 | IP65 connector in the wiring area of a CP32xx, CP37xx or CP72xx for a USB 3.0 port, push-pull USB 3.0 socket |






