Any self-respecting geek should know these, they do come in handy from time to time:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhhjrnp88vQhLQofadbwS-DXlXswBe-E0COSKtsqeCms95KJiqtcAzcWttqI3TwIEPMDKOil-yMCLHP_tbONkXzon-FyyHrvdx8lMJ-H7O4FYUVMqBfPfbYNOqJdALA95z6atGsOZdxM5MX/s400/common-ports.png)
- Serial Port: A serial communication physical interface through which information transfers in or out one bit at a time
- PS/2 Connector: Is used for connecting some keyboards and mice to a PC compatible computer system. Its name comes from the IBM Personal System/2 series of personal computers
- Parallel Port: Sends several data signals simultaneously over several parallel channels (as opposed to the Serial Port)
- Games Port: The traditional connector for video game input devices on x86-based PCs
- All these ports have been replaced by USB
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMEM24BB5byhIlE5xsPdyC-AEeTLepLsGMFPxBy5QkuC5jR9St-GOr5OlLUb3l_SNHsVS1oBk2OJAfDmQb6lDFZ-rd-oSadUTYnrMZjJKJ8cBBdXvRZgZhy4DZsSIuAvXGwpcktawT5_m4/s400/network-ports2.png)
- Ethernet/RJ45: Martin’s illustration calls this RJ45, however according to Wikipedia, this is incorrect and should be called 8P8C (8 Position 8 Contact.) They are usedtypically used to terminate twisted pair cable
- Modem/RJ11: a physical interface often used for terminating telephone wires, used to send a fax as well
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU5qE_52DCXnyu1SflF3PJ7ExQLsrOUCLJ8qulV6mGnONIpU7N84WEXrMClcy1-dbdpWVMUZ5jpRDebK5yUTtML_Gu5UwD1exJ-eqcUIRN5oGfXSSGNaCsLzJRj-Cfao3G9dbGUf8HGBhz/s400/video-ports1.png)
- VGA Port: Acronym for Video Graphic Array. Use this for external monitors
- S-Video: Separate Video (not Super Video) carries the video data as two separate signals, lumen (luminance) and chroma (color)
- HDMI: High Definition Multimedia Interface is a compact audio/video interface for transmitting uncompressed digital data
- DVI: Digital Video Interface is a video interface standard designed to provide very high visual quality on digital display devices such as flat panel LCD computer displays and digital projectors
- Mini-DVI: This connector is used on Apple computers as a digital alternative to the Mini-VGA connector
- Micro-DVI: This port is a video connection port used by some Apple MacBook Air laptop computers produced between January-October 2008
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8bsMzRgFOJWe3IdBKDUwaBnt_3mtZCza5_0DlRyFbXTotaAXwoWrmlw21AG5ByhcbQX_SS3cVzIqWr8DEG0n-p1Rz98Ie7M_8WwUMkCD6wX0gdnF1dy275fPXMApturKuc2bE9eEjYf40/s400/audio.png)
- Audio Mini-Jacks Sockets are self-explainable, you can find more comprehensive description of this interface here
- S/PDIF: Or Sony/Phillips Digital Interconnect Format
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSOe_RUnEmmKU_9_pheLhUCsQIH-Huu6NW7SGr-xxd6PW-r-GnGFkdTQMYsFEKssj9UJnDkCmvNfB-Z3KzO2d8Mcr_3J6JxMLFRLKznvClcKTj24hpu4vgn3MAjqhhQJOO3XIXbk9lihvo/s400/firewire-ports.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEguq-1zY8EAcQJN0YcCsEsZBstDfwRhkfcnlbnHjHOlU2_XKMvtGbiCkOmcvWn4kdeF9vNCQblFNvStBP-ZC1LsQRCa2kxZ4zYdI7zGGF8zFLrFNhLwERO1msKyOV2jAyvFgv9dE8UBYDhm/s400/power-ports.png)
- C5 / C6: “Cloverleaf” or “Mickey Mouse” power connectors can be seen on the majority of laptop power supplies and portable projectors
- C7 / C8: C7 is also sometimes called “Shotgun.” These connectors can be found on cassette recorders, battery/mains operated radios, some full size AV equipment, laptop computer power supplies, video game consoles
- C13/C14: C14 is used as an inlet to attach the power cord to the power supply, as do many monitors, printers and other peripherals. While many older computers also provide a panel-mounting C13 outlet for powering the monitor
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjkx-DWoulgMXw3gUwHKT16m-_sr6HQ0FEvTHw2It4pmUHX_ztyR4VJ_Mw9lFI18q3bFfDBmqZY_KpPLhldXbnNsQ7Qdg8kYgfPH0-7yX6OaeKxAvfHLzN9Ba2L7jlbLqyT5PfPZTEGZ8k/s400/usb-ports.png)
- USB-A: This kind of plug is most frequently seen on cables that are permanently attached to a device, such as one on a cable that connects a keyboard or mouse to the computer
- USB-B: Typically plugs into an upstream receptacle on a device that uses a removable cable, e.g. a printer
- Mini-A & Mini-B: Mini-A is now deprecated, but both these plugs are plugs are approximately 3 by 7Â mm. These are used in PDA’s, mobile phone, and cameras
- Micro-B: Micro plugs have a similar width as the Mini’s but approximately half the thickness. These enable integration into thinner portable devices.
- Micro-AB: This receptacle is capable of accepting either a Micro-A plug or a Micro-B plug
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgSneaQYMuDrykrtpT8vu_2OYbN1TryL44wGNsJjCp4sNr7Z1e4sjJa9QnamFXtcVlgOQWoIR2QTpIO9pN61Z-lLEpz4aHXVikePUlQvoo3aa2khJgfAGQpp5yM2wtYVqi6OzdCYBvXfwYO/s400/other-ports.png)
- eSata: External Serial Advanced Technology Attachment, standardized in 2004, provides a variant of SATA meant for external connectivity
- DisplayPort: Is a digital display interface standard put forth by the Video Electronics Standards Association (VESA) since 2006
- MiniDP:Â A miniaturized version of the DisplayPort used by Apple
- PCMCIA: Personal Computer Memory Card International Association is used in a wide range of products such as WiFi, networking and memory.
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