Connectors On A Hard Disk Drive Connectors On A Hard Disk Drive On this page:
Cables and Connectors Cases CD-ROM and Optical storage mediums Central Processing Units Floppy disk drives Hard disk drives Computer memory Modems and routers Computer monitors  
Go To The Computer Tutorials Website Go To The PC Reference Library Website Go To The Frequently Asked Computer Questions Website Go To The Technology World Blog Go To The Forums Website
View The Website Map To Help You Navigate Around This Website Site Map View Advertising Information About How You can Advertise Your Products or Services With Technology World. Advertising Interested In Making a Donation To Technology World? Click here to find out how! Donations Interested In Making a Donation To Technology World? Click here to find out how! Articles At A Glance
Jump To:
Search:
Home > Hard Disk Drives > Data And Power Connectors On A Hard Disk Drive
 
Menu Selection:
On This Page:
These pages provide basic information about how hard disk drives work.
 
Available Articles:
AD
Welcome To The Hard Disk Drive Reference Section
Jump To:
How It Works

MOLEX POWER CONNECTOR
The molex power connector on all hard drives provides a four pin power connection to the hard drive. Molex connectors have been around since the evolution of the 8088 computer Molex power connectors are commonly designed an Ultra ATA hard disk drives.and will continue to be the primary power type for Ultra ATA hard disk drives and optical storage mediums. There is no sense of the molex power cocnnector being phased out by a popular power connection type. This is because some standards will not change no matter how current standads and technologies change.

On a typical power supply unit (PSU), you'll find multiple Molex connectors, while the same unit has been equipped with only 2 SATA- the most current trend for power connections on hard drives) connectors.

A molex connector consists of one red +5V wire , one +12V wire, and two black grounded wires.


Ultra ATA Hard drives have 4 sets of pins, with each pins set responsible for controlling a portion of the drive's master / slave relationship.MASTER SLAVE JUMPER PIN

These pins on a ATA hard drive are used to control the "chain of command" of IDE devices within the computer. In a system supporting the ATA standard four hard drives can peacefully co-exist, using a master and slave configuration.

Each channel can operate two devices. This chain of command mode is described by using the following criteria:

    What device refers to the master device.

    What device refers to the slave mode.

In an Ultra ATA based system, two channels co-exist because they are labelled differently. Respectively, the master device should be recognized on IDE-0, and the secondary device should be labelled respectively IDE-0 and IDE-1. There can exist two devices on channel IDE-0, and two devices on channel IDE-0

Mode Explanation of Mode Devices Supported
Master When a device is setup to work in master mode, that hard drive has to be the first device in the chain of command. Also, the second drive needs to be configured as the slave device so that the two can co-exist with each other on the same IDE cable.

Hard Disk Drives.
Optical Storage Mediums.
Tape and Zip Drives

Slave

When a hard drive is setup to work in slave mode, that hard drive needs to be the second in the chain of command.

Ideally you will want to put your optical drives on IDE-0 or IDE-1, and your hard drives on IDE-1 or IDE-0. Avoid mixing hard drives and optical drives on the same IDE channel.

Hard Disk Drives.
Optical Storage Mediums.
Tape and Zip Drives

 

Cable Select
(CS)
In Cable Select (CS) mode each device needs to be configured using the CS jumper setting on the particular device. In this mode, it is not neccessary for a two IDE devices to be referred to as Master or Slave devices, since all devices are communicating based on how the IDE cable connects the devices internally through the system. You still have to setup the jumpers on all devices to use CS mode. Hard Disk Drives.
Optical Storage Mediums.
Tape and Zip Drives
Table 1.1 - Explanation of Master, Slave, and Cable Select Data Transfer Options

40 PIN IDE CONNECTOR

This 40 Pin IDE drive connector allows for the transmission of data between the hard drive anIDC 40 pin SATA cable.d other components in the system. IDE is an older style technology but still remains in popular method for connecting IDE based devices to the motherboard's connections. A large number of workstations still implement IDE technologies since it is cost effective and is compatible with the majority of motherboards old-school and new. IDE devices are also referrred to as PATA (Parellel ATA); both terms reference the same style of hard drive technology.

 
class="TableHeader" >

Types And Styles

Illustration box (optional)
 
AD
AD Browse For More PC Hardware Information: AD
PCGuide Index Menu
     
Cables and Connectors Cases CD-ROM and Optical storage mediums Central Processing Units Floppy disk drives Hard disk drives Computer memory Modems and routers Computer monitors