This Motherboard diagram will Help you Understand its
A motherboard diagram is a great resource if you haven't already
figured out, or don't understand clearly what all the connections on
the motherboard are for. This diagram will explain the
connections and a little more about each of them so you can figure out
exactly what each of them do.
you can't clearly see what's behind the number, use the picutre below
as they're both from the same motherboard. Click on either
image for a larger view.
- Front Panel
Header - This is how you connect the mother board
to the computer case. This will relay the button presses,
flash the lights and connects the electronics on the computer case to
Battery - The battery will let the BIOS chip on
the motherboard store information and settings about your computer,
like date and time.
Connector - If you need additional firewire ports
on the back of the computer, you connect the firewire connector to this
port instead of having to buy an additional add on card. The
connector often comes with your motherboard.
- USB Connector
- If you need more USB connectors on your
computer, connect the add on connector here will give you additional USB
connections on the back of your computer case. This connector
typically comes with your motherboard. On this motherboard
diagram, you can see the motherboard has 2.
- CPU Power
Connector - As CPU's are using more and more
power, it is common for a computer to have an additional power
connector on the motherboard. Typically they are 4 or 8 pin.
Power connectors only fit one way, so if it fits, it belongs
- 16x PCI
Express Connector - This connection, along with the
black one on the right of number 8 are both used for video cards.
Use the one closest to your CPU first when installing a video
- 1x PCI
Express Connector - This can be used for audio
cards, add on cards of all sorts. Since it's really short,
it's easy to tell if it's this PCI express connector.
- PCI Slot
- Still on motherboards after a long long time.
Many add on cards on the market use this connection.
If you can, go with PCI Express as it's the new standard.
Connections - If you add any fans, on have fans on the
computer case, this is where you plug them in. With the
exception of the CPU fan, none of the other connectors need to have
fans installed on them.
- Floppy Disk
Connector - So outdated, but still useful for
some things, 1.44MB floppy drive connection to connect a floppy disk
drive to the motherboard.
- ATX Power
Connector - Whether it's 20 or 24 pins, this will
supply the motherboard with all the power it needs. The last
4 pins on a 24 pin are to supply the video card with extra power if
needed. Some video cards will still require their own power
- IDE Connector
- These used to be used for hard drive, with
much faster, they are just about obsolete. Often, you just
on DVD drives.
Memory Slots - There are different standards, DDR, DDR2,
and DDR3, they are not backward compatible so check your motherboard
information to see which one it needs along with the MHz to make sure
you get the right RAM.
- CPU Socket
- A CPU socket will only fit one type of CPU. If you're not
sure what CPU's will work with your motherboard, check the
manufacturer's website. They'll tell you exactly which CPU's will work.
Connections - SATA,
SATA II and SATA III are the current
standards. They are backward compatible so you can connect
any devices, it will just run at the slowest conenction speed.
These are used for things like hard drives, and disk drives.
On this motherboard diagram, you can see this motherboard has 6
If you see something on your motherboard that is not listed here, there
should be a manual with your motherboard. It will also have a
motherboard diagram that will tell you about any additional connectors
you find. I only have the main ones required for building a
computer listed here.
Motherboard Diagram to What Is A Motherboard
Learn how to build your own computer