| A | B |
| Multimedia Connections | Interfaces used for audio and video generally on a sound card. |
| Network Adapter | Expansion card with connectors for attaching a computer to a network. |
| NIC | Expansion card for connecting a PC to network cabling. |
| Parallel | Transmits 8 bits side by side at the same time. |
| PC bus | The original 8 bit expansion slot included on XT motherboards. |
| PCI | The 32 bit expansion slot most common in today's computers. |
| PCIe | The high-speed expansion bus intended to replace PCI and AGP and currently comes in several different sizes, x1 up to x16. |
| PnP | Plug and Play; the technology that allows devices to configure their own resources. |
| Port | A pathway for data into and out of the computer. |
| Riser Card | A small expansion card for audio, modem and networking. |
| RJ-11 | Connector used to attach an ordinary phone line to a modem. |
| RJ-45 | Connector used to attach a twisted pair network cable to a computer or other network device. |
| RS-232 | Serial standard developed by the TIA/EIA that is used by the COM ports. |
| SCSI-ID | Number used by a SCSI device to identify itself on the SCSI chain. |
| Serial | Transmit 1 bit at a time. |
| Sound Card | Expansion card with connectors for line in, line out and auxiliary devices. |
| S-Video | Separated video; analog video signal that carries brightness and color on 2 different channels as opposed to composite video. |
| UART | Integrated circuit used in conjuction with the serial ports that translate data between serial and parallel devices. |
| USB | Standard designed to interface up to 127 daisy-chained devices. |
| USB 1.1 | Allows a data transfer rate of up to 12 Mb/s. |
| USB 2.0 | Allows a data transfer rate of up to 480 Mb/s. |
| Video Port | Interface used to video connectors; usually 15 pins in 3 rows. |