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Input/Output Ports Identification And Function Input/Output Ports Identification And Function

Device Connection t. All devices that connect outside of the computer must use a Device Connection t. All devices that connect outside of the computer must use a port to connect t. Known as I/O ports (Input/Output) t. Bits can travel in parallel or in serial

Serial Connectors t. Can use a 9 or 25 pin male sub-D connector t. Serial Connectors t. Can use a 9 or 25 pin male sub-D connector t. Slowest ports t. Used for: t. Mice t. Keyboards t. Modems

Serial Ports t. Also called COM 1, COM 2, COM 3, and COM 4 Serial Ports t. Also called COM 1, COM 2, COM 3, and COM 4 t. Can be referred to as a RS-232 port t. This is a standard that defines serial communication

Parallel Ports t. Uses a 25 pin female sub-D connector t. Data flows over Parallel Ports t. Uses a 25 pin female sub-D connector t. Data flows over 8 lines t. Used for: t. Printers t. Scanners t. Portable drives

Parallel Ports t. When used to connect to a printer, it uses a 36 Parallel Ports t. When used to connect to a printer, it uses a 36 pin centronics connector at the other end

Parallel Ports t. Also called LPT 1, LPT 2, LPT 3 t. Bi-directional communication Parallel Ports t. Also called LPT 1, LPT 2, LPT 3 t. Bi-directional communication t. Called Enhanced Printer Port (EPP) t. Transmission mode can be set in the BIOS t. Maximum cable length is 15 feet

PS/2 and Keyboard Connectors t. PS/2 connectors are used for both mice and keyboard PS/2 and Keyboard Connectors t. PS/2 connectors are used for both mice and keyboard t. Also called 6 -pin mini DIN t. Green for mouse t. Purple for keyboard t. Not interchangeable t. Standard for ATX boards

DIN-5 Keyboard Connector t. Older motherboards use a DIN-5 connector for the keyboard and DIN-5 Keyboard Connector t. Older motherboards use a DIN-5 connector for the keyboard and a 9 pin serial connection for the mouse

Universal Serial Bus (USB) t. Used to connect almost all peripherals t. Can connect Universal Serial Bus (USB) t. Used to connect almost all peripherals t. Can connect up to 127 devices t. Designed to be hot-swappable t. Designed to connect in a daisy chain

USB Standards t. USB 1. 1 – 12 Mbps t. USB 2. 0 – USB Standards t. USB 1. 1 – 12 Mbps t. USB 2. 0 – 480 Mbps t. A-Style connector is used on the computer or hub t. B-Style connector is used on the device t. Must have Windows 98, 2000 or XP t. Not supported in Windows 95 or NT 4. 0

USB Cable Lengths t. Hi Powered devices – 5 meters max t. Also t. USB Cable Lengths t. Hi Powered devices – 5 meters max t. Also t. Low Powered devices – 3 meters max t. Also t. Can called hi-speed called low-speed be extended if you use a selfpowered hub

Fire. Wire t. Also called IEEE-1394 t. Used for digital cameras, camcorders, and scanners Fire. Wire t. Also called IEEE-1394 t. Used for digital cameras, camcorders, and scanners t. Bi-directional communication t. Developed by Apple Computers t. Requires a special adapter card

Fire. Wire Cable Length t 4. 5 meters max length t. Hot-swappable t. Transfer Fire. Wire Cable Length t 4. 5 meters max length t. Hot-swappable t. Transfer rate of 400 Mbps t. Supports 63 devices in a daisy chain