Pace IT - Cables and Connections

Cables and connections.

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Instructor, PACE-IT Program – Edmonds Community College

Areas of Expertise Industry Certifications

PC Hardware

Network Administration

IT Project Management

Network Design

User Training

IT Troubleshooting

Qualifications Summary

Education

M.B.A., IT Management, Western Governor’s University

B.S., IT Security, Western Governor’s University

Entrepreneur, executive leader, and proven manger

with 10+ years of experience turning complex issues

into efficient and effective solutions.

Strengths include developing and mentoring diverse

workforces, improving processes, analyzing

business needs and creating the solutions

required— with a focus on technology.

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– Internal cables and connections.

– External cables and connections.

– Display device cables and

connections.

PACE-IT.

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– Floppy disk drive (FDD).» Contains 34 wires and the connector has 34 pins.

» Up to two FDDs can be connected per cable, with the higher

priority going to the device connected after the twist in the cable.

– Parallel AT attachment (PATA).» PATA has two basic standards—the integrated drive electronics

(IDE) and enhanced integrated drive electronics (EIDE).

• IDE contains 40 wires and the connector has 40 pins. Up to two

PATA devices can be connected per cable, with the priority

being set by jumpers.

• EIDE contains 80 wires and the connector has 40 pins. It is

backward compatible with IDE, but allows for higher throughput.

Both have a maximum length of 18 inches.

– Serial AT attachment (SATA).» The cable contains seven wires with seven pins.

» Only one device can be connected per cable, with the priority

being set in the Basic Input/Output System (BIOS).

» The connector is L shaped.


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– Serial.» The most common cable and connection is the nine pin

connector.

» The connector is often called a DB-9 or RS-232 connector (RS-

232 is a serial communications standard).

– Parallel.» The most common cable and connection is the 25 pin

connector.

» The connector is called a DB-25.

– Personal System/2 (PS/2) or miniDin6.» It was most often used to connect a mouse and/or a keyboard

to a PC.

» In most cases, the end not connected to the PC was hardwired

into the actual device.

» It used a keyed six pin connector.


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– Small Computer System Interface (SCSI).» SCSI is a standard that involves how peripheral devices

communicate with the PC. It has been implemented through various

cables and connections.

» The most common cable used in implementing SCSI is a ribbon

cable with two or more connectors on it.

» The most common SCSI connectors are:

• 68-pin

• 50-pin

• 25-pin

– Sound connections.» In many cases, the connections to speakers, microphones, and

subwoofers is made with cables that plug into jacks on the back of

the PC—providing an analog audio sound (each cable carries a

single sound channel).

» The jacks are called tip ring sleeve (TRS) connectors.

» The Sony/Phillips Digital Interconnect Format (S/PDIF) connector

will provide digital sound over a single cable.


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– Network connections.» The registered jack (RJ) 45 (RJ-45) is the most common

modern connector for Ethernet networks.

» RJ-45s use an eight pin modular connector with up to

eight wires being used as conductors (8P8C) to transmit

data.

» The RJ-11 is the most common connector for telephony

and is often used when networking over telephone wiring.

» RJ-11s use a six pin modular connector with up to four

wires being used as conductors (6P4C) to transmit data.

» Coaxial cabling can also be used to make a network

connection.


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– Universal Serial Bus (USB) 1.x and 2.0.» They use the same cables and connections and the connectors

contain either four or five pins.

» Type A USB connectors carry power to the peripheral device

as well as carrying data.

» Type B USB connectors do not provide power to the peripheral

device.

» The maximum length of a USB cable is five meters.

– USB 3.x» A newer higher speed version of USB.

» USB 3.x devices use a different type of connector for the

peripheral.

» Earlier USB peripheral devices can use standard USB cables

to connect to a USB 3.x port.

» The USB 3.x port on PCs is usually colored blue to differentiate

it from earlier USB versions.

» As long as the cable matches the specifications, there is not a

maximum length for USB 3.x cables.


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– IEEE 1394 (FireWire).» FireWire comes in two current standards:

• FireWire 400: uses a six conductor cable, with a maximum

length of 4.5 meters.

• FireWire 800: uses a nine conductor cable and has a

maximum length of 4.5 meters as well.

– External SATA (eSATA).» A standard that brings the speed of SATA outside of the PC’s

case.

» eSATA is a type of combination port. It combines a USB port

with a SATA port.

» It has not been approved by the organization that sets the USB

standards, nor by the organization that sets the SATA

standards, so use at your own risk.


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– Analog.» Composite/RCA cable: looks like a TRS cable but can carry

an analog video stream. It results in low resolution.

» S-video cable: is a four pin cable that has better resolution

than a composite cable.

» Component/RGB cable: is a combination of three cables, it

breaks the color components of the video stream into three

discrete channels. This allows for better resolution than S-

video.

» Video Graphics Array (VGA)/DB-15/HD-15: is the analog

display standard that uses a 15 pin D-subminiature connector.

The pins are arranged in three rows of five, which are fitted into

a D shaped shell.


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– Digital.» Digital Visual Interface (DVI): is designed to carry an

uncompressed video stream resulting in a superior image.

• DVI-A (analog): it can only carry an analog stream.

• DVI-D (digital): it can only carry a digital stream.

• DVI-I (integrated): it can carry either a digital or analog

stream.

» High-Definition Multimedia Interface (HDMI): is designed to

carry uncompressed digital video and audio across the same

cable. It provides for a high transfer rate with very good quality.

It comes in two standards:

• HDMI: the full size 19 pin standard.

• Mini-HDMI: smaller but still contains 19 pins; it is not as

robust.

» DisplayPort: is a nonproprietary standard for transmitting high

quality video from a device to a display. It uses a 20 pin

connection. It also comes in various sizes, depending on the

form factor of the device.


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Basic internal cables and connections include the FDD cable, a 34 pin 34

wire cable. For PATA devices, there is also the IDE cable (40 pin with 40

wires) and the EIDE cable (40 pin with 80 wires). SATA data cables are

seven pin seven wire cables that have an L shaped connector.

Topic

Internal cables and

connections.

Summary

There are many different kinds and types of external cables and

connections. Some of these include: serial, parallel, PS/2, SCSI, sound

connectors, network connectors, USB, IEEE 1394, and eSATA. Each has

its own characteristics and purpose.

External cables and

connections.

Display device cables and connections can be broken up into two basic

categories—analog and digital. Analog connections include: RCA, S-video,

component, and VGA. Digital connections include: DVI, HDMI, and

DisplayPort.

Display device cables and

connections.

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THANK YOU!

This workforce solution was 100 percent funded by a $3 million grant awarded by the

U.S. Department of Labor's Employment and Training Administration. The solution was

created by the grantee and does not necessarily reflect the official position of the U.S.

Department of Labor. The Department of Labor makes no guarantees, warranties, or

assurances of any kind, express or implied, with respect to such information, including

any information on linked sites and including, but not limited to, accuracy of the

information or its completeness, timeliness, usefulness, adequacy, continued availability

or ownership. Funded by the Department of Labor, Employment and Training

Administration, Grant #TC-23745-12-60-A-53.

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