Term
A generic term for ports used for input or output, such as USB, parallel, serial, SCSI, PS/2 mouse and keyboard, and FireWire. Storage device ports (PATA, SATA, and eSATA) are not categorized as I/O ports. |
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High-speed replacement for older I/O ports USB 1.1 has a peak speed of 12Mbps. USB 2.0 has a peak speed of 480Mbps; USB 2.0 ports also support USB 1.1 devices. USB 2.0 devices can be plugged into USB 1.1 devices but run at only USB 1.1 speeds. USB 3.0 runs at 5Gbps; supports older USB devices at the native speeds of those devices. |
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2) Universal Serial Bus (USB) – |
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USB 2.0 ports and devices. |
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USB 3.0 ports and devices. |
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Connects to motherboard header pins connected to integrated I/O ports. |
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USB hub that plugs in to a USB port or USB root hub. |
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Receives power from upstream USB port; limits power to 100mA per device. |
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Uses AC adapter; provides full power specified for USB port type(s) supported. |
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A high-speed serial connection. IEEE 1394a (FireWire 400) runs at 400Mbps and IEEE 1394b (FireWire 800) runs at 800Mbps. i.LINK is Sony’s name for a four-wire version of IEEE-1394a. |
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Small Computer System Interface. A flexible interface usable for hard and optical drives, scanners, and other devices. Narrow SCSI interfaces enables daisy-chaining of 7 devices to a single port. Wide SCSI enables daisy-chaining of up to 15 devices to a single port. |
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Connecting multiple devices through a single port; used by EPP and ECP parallel-port modes and SCSI. |
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Method of indicating different devices attached to a SCSI host adapter; each device must use a unique device ID#, which is set on each device. |
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Device placed at the end of the SCSI daisy-chain or a switch setting on the last device on a SCSI daisy-chain. |
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A serial communication physical interface (also known as COM port) through which information transfers in or out one bit at a time. The RS-232 standard is commonly used to transmit data through DB-9 ports. |
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Serial cable that has transmit and receive wires crossed at one end; used for data transfer. |
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I/O port that enables data-transfer method sending 8 bits or multiples of 8 in a single operation; quite often a DB25F port. Also known as LPT port. |
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A 6-pin Mini-DIN port used for mice or keyboards. |
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3.5mm (1/8 inch) jacks used for stereo and surround audio, microphones, and line in/line out connections. |
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Sony/Philips Digital Interface; digital audio standard for interfacing sound cards or onboard sound hardware to a digital amplifier. |
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Sony/Philips Digital Interface; digital audio standard for interfacing sound cards or onboard sound hardware to a digital amplifier. |
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Human interface device; mouse or keyboard. |
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Keyboard layout with Windows and right-click keys added to the old 101-key layout. |
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For more study material on this topic
click here and go to
my A+ Cert Study Help page
http://www.share-connect.com/a--certification.html
Thanks, mikeypzy |
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Definition
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Some or all material taken from:
Soper, Mark Edward, David L. Prowse, Scott Mueller,
“Customized PCs and Multimedia Devices.”
Chap. 8 In CompTIA A+ 220-801 and 220-802
Authorized Cert Guide, Deluxe Edition.
Indianapolis: Pearson, 2013
Visit Pearson on the web: http://www.pearsonitcertification.com/
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Keyboard-video-mouse; a device that enables a single keyboard, video display, and mouse to work with two or more computers. |
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