Internal Ports
Audio Front Panel - An Intel front panel audio module is designed to fit into a 3.5 - inch drive bay. For example, something that would be used as a floppy disk drive. The headphone and microphone cables also support HD audio. It can be connected through the audio header so that it can be connected to the desk top. The whole module contains two chords, the first of which provides power to the device from desktop board, but the second yellow - tipped cable connects to the audio header.
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Digital Audio Header - this connects the AV receivers to devices such as HD TV's and Also DVD players by using a optical cable, for example HDMI.
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Serial Port Header - This port supports a nine - pin, serial port, which is usually a bracket that takes up a lot of space which is located on the back of the case. A number of RS -232 connections remain in use at the moment, mostly in the point - of - scale devices or specialized test instruments. However consumer mother boards usually don't have these.
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Fire Wire - Fire Wire is the technology company - apple's version of a standard high performance Serial bus. which is used for connecting devices to a PC. It provides the PC with a single plug and socket connection, where up to 63 devices can be attached with data transfer speeds that can go up to 400 megabits per second.
USB Headers - These connectors are used to link to the USB ports that are on the front of the case. This means that different input and output devices can be plugged in and connected to the PC, e.g. keyboards and mouses.
SATA Connectors - These components connect via cables to various storage devices, e.g. hard - disk drives, solid - drive and also optical disk drives.
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IDE Connector - This component isn't that common now, IDE connectors used to be used to connect to the older type of hard drives. Also, it used to be that a lot of many optical drives supported this type of connection - IDE. But nowadays SATA is used to connect to the latest versions of storage devices.
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Floppy Disk Controller - A floppy disk controller is a disk controller that directs and controls reading/writing to a floppy disk that can be seen in a computer. But the concepts may or may not be applicable to other types of controllers.
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Memory Sockets - A memory socket is what allows computer memory (RAM) to be inputted into the computer. Depending on the motherboard, there may be 2 to 4 memory slots, they are also what predicts the type of RAM that is used with the computer.
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CPU Fan Header - This type of connector is specifically designed to link to the CPU cooling system. The system BIOS monitors and observes the CPU cooling fan speeds, if the fan isn't connected to the header, an error may occur when the PC has been powered on.
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8 Pin ATX - This connector is used to power up the CPU.
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24 Pin ATX - The 24 pin ATX connector provides power to the motherboard that is powered by the power supply of the PC.
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Secondary Fan Headers - A secondary fan is any type and size of fan that is inside or attached to a computer case, that is used for the cooling of the different components that are inside the case, but this doesn't include the CPU fan.
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PCI Express X1 - This is a serial interface that uses many lanes that may be put together in a group. The X1 slot is a slot that supports a single PCI express LIN. It is used for input and output devices , that don't need to have a greater bandwidth than 500 megabytes per second. E.g. sound cards are usually PCI x1.​
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PCI Express X4 - Supports four PCI express lines , which is used for peripheral devices such as LAN cards and wireless cards.
PCI Express X16 - This supports sixteen PC express lines for the graphics cards.
PCI Legacy X32 - This is a legacy slot that is used to connect old devices to more modern and recent motherboards.
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