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Computer Repair and Maintenance Notes

Institution: College

Course: Computer Repair and Maintenance

Content Category: Study Guides

Posted By: murimi the Doctor in Relationship

Document Type: PDF

Number of Pages: 40

Price: KES 200
 
    

Views: 947     Downloads: 0

Summary

MOTHERBOARD FORM FACTOR
Discuss Motherboard form factors:
Computer motherboard Form Factor can be defined as the basic standard for manufacturing
various components of computer system which are easily fitted in computer cases with power
supply.
Determines general layout, size and feature placement on the motherboard.
Connectors etc. Why use the same Motherboard Form Factor?
As above mentioned that you must select the proper form factor for MB, computer cases, and
power supply because of their compatibility issues may arise after purchased
1. Motherboards are easily fit inside the computer case/Cabinet
2. The Holes present in the cabinet perfectly matches with MB’s hole present on the edges
3. Power Supply can be installed perfectly as their holes matches to Cases when used same
form factor
4. Front panel connector have specific ports mentioned for Power switch ,Reset Switch
,HDD Led ,power Led, speaker, front USB and Front panel Sound.
5. Choosing correct power supply helps in the correct voltage flow required for proper
functioning of motherboard and other computer components.
1) AT (Advanced Technology):
• The oldest of the main boards, these motherboards were used in earlier 286/386 or 486
computers. The AT means the board consists of advanced technology (AT) power
connectors.
• There are two power connectors of 6 pin each mounted on the AT motherboards. The AT
motherboards were available in the early 80’s. Oldest and biggest form factor and popular
until Baby AT.
• Capable of using 386 processor.
• 12’-inch size and was difficult to install, service and upgrade.
2) Baby-AT:
• Standard in computer industries and still being used in Pentium class products.
• CPU socket is placed in such a way that it can interfere with longer bus cards.
• Limitation over peripheral card installation.
• I/O ports are connected to pin-outs near the floppy drive which results in jumbling of
ribbon cables.
3) ATX (Advanced Technology Extended):
Is a motherboard configuration specification developed by Intel in 1995 to improve on
previous de facto standards like the AT design? The ATX motherboards started in 90’s and
are still available. The ATX connector on the motherboard consists of a single connector.
These boards are used for P2/P3 or P/4 processors. The most common form factor for a
motherboard is the ATX form factor with the following features: -
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