(CompTIA A+ 1011-1) Jason Dion Udemy Section 2: Cable Types

"Nibble"

4 bits

"Byte"

8 bits

1000 bits

1 Kilobit (1Kb)

b

bits

B

Bytes

1,000,000 bits

1 Megabit (Mb)

1,000,000 bytes

1 Megabyte (MB)

1,000,000,000 bits

1 Gigabit (Gb)

1,000,000,000 bytes

1 Gigabyte (GB)

1,000,000,000,000 bits

1 Terabit (Tb)

1,000,000,000,000 bytes

1 Terabyte (TB)

USB Type A

USB Type B

USB 3.0

USB Mini

USB Micro

USB Type C

USB Micro B

VGA Port

Mini VGA Port

S-Video Port

Micro DVI Port

MINI DVI Port

Composite components

Mini Displayport

Mini HDMI Port

DisplayPort

HDMI

CD Drive

The ability to read and write information to the system using an optical drive

Power button

A physical button, that when pushed, sends an electrical signal from a cable directly to the motherboard that tells the computer to turn on

Audio jack

Used to connect headphones and microphones to the computer using a 1/8th inch Mini-Jack

SuperSpeed USB Connectors

Used to connect other peripherals, like a mouse, a keyboard, a webcam, a printer, or other devices to a computer

Cooling Fan

Blows hot air out of the CPU, the motherboard, and the case which expels the extra heat out of the system to keep the components inside cool

HDMI Connector

Used to connect a monitor, TV, or another device for a video output display

RJ 45 Connector

Provides net access to local area networks over a wired connection

SPDIF Connector

(Sony/Phillips Digital Interface) An optical connector that allows high quality audio to surround sound system

Kensington lock

Allows the ability to place a metal cable from the desk to the computer tower to ensure the computer tower is not stolen

DB 25

A D-shaped sub miniature pin that goes into the back of a computer and has two thumb screws on the side

Serial Cable

A cable that sends data in ones and zeros in a straight line, but it can only send one bit at a time, which is measured at the speed of cables in bits per second

DB9 Connector

A slow speed connection for much older mice keyboards and other external modems

USB 1.1

Known as fulls peed and runs at 12 megabits per second

USB 2.0

Known as high speed and runs at 480 megabits per second

USB 3.0

Known as super speed and is at least 5 gigabits per second

USB 3.1 Gen One

Runs at 5 gigabits per second

USB 3.1 Gen Two

Runs at 10 gigabits per second

USB 3.2 Gen 2x2

Runs at 20 gigabits per second

USB 4

The most modern version of USB and can run at 40 gigabits per second

USB Speeds

HDMI

Known as high-definition multimedia interface and it is the most widely used video interface in the world

HDMI Types

HDMI Category 1

The standard HDMI that is used for video content (1080p, 60 Hertz)

HDMI Category 2

The high-speed HDMI that uses higher resolutions (greater length)

Display Port Interface

Used for digital displays with a high-performance replacement

Display Port Types

DVI

Used to support both analog and digital outputs

-DVI A (Analog)

-DVI D (Digital)

-DVI I (Both)

VGA

The graphic standard that used a 15-pin standard analog video interface port that would connect to the computer

Thunderbolt

A display interface that is used for data transfer

Supports speeds up to 40 gigabits per second for data transfer over cables (1.6 ft)

Lightning cable

A specific proprietary connector that was created by apple for their mobile devices

SATA Cable

The standard cables that are the main method of connecting a storage device to a motherboard inside of a desktop computer

Has two cables, one is a seven-pin data cable, and the other is a 15-pin power connector

External SATA

A SATA cable on the outside of the case

PATA

(Parallel ATA) The old IDE connectors with the exact same cables and connectors and standards but renamed for branding.

Parallel devices have each cable support up to two devices and they both can communicate at the same time.

Molex Power Connector

A 4-pin connector that would attach from the power supply directly to a device

SCIS

(Small Computer System Interface)

A legacy parallel bus connector that allows multiple devices to be Daisy chained together

▪ A narrow SCIS can support up to 7 devices, but a wide SCIS can support up to 15 devices