General Prefixes:
* Air: Air port (airport)
* Sea: Sea port (seaports)
* Space: Space port (spaceports)
* River: River port (riverports)
* Lake: Lake port (lake ports)
* Dry: Dry port (a landlocked inland facility offering similar services to a seaport)
Computer Science Prefixes:
* TCP: TCP port (Transmission Control Protocol port)
* UDP: UDP port (User Datagram Protocol port)
* Serial: Serial port
* USB: USB port
* HDMI: HDMI port
* Ethernet: Ethernet port
* Wireless: Wireless port
Other Prefixes:
* Out: Out port (opposite of an in port)
* In: In port (opposite of an out port)
* Side: Side port (a port on the side of something)
* Front: Front port (a port on the front of something)
* Back: Back port (a port on the back of something)
* Top: Top port (a port on the top of something)
* Bottom: Bottom port (a port on the bottom of something)
The specific prefix you use will depend on the context and what you are trying to describe.