Computer chassis internal wiring

Indeed, inside the chassis hardware connection, most wire plugs and jacks are unique, such as board 20 + 4pin, CPU's 4 + 4pin can not be universal, multi-interface port and the Chinese do not mix round mouth It will lead inserted backwards, so that even a novice can hardly wrong, be very user-friendly design.
But connect the chassis and motherboard socket thread is different, many slots are a long way, in addition to USB and audio outside, whether it is a positive or backwards, or even out of order can be plugged in, and instructions online and on the motherboard due space limitations is also very simple, which makes a lot of new entrants DIY users are unable to start.

USB 3.0 cable inside the chassis
The current mainstream chassis or upper portion of the I / O area is designed with front audio jack, responsible for sound input and output; USB 2.0 and USB 3.0 interfaces for connecting USB 2.0 and USB 3.0 devices; some of the chassis also provides a read card or wireless charging such a function, but also need to connect the wire to the motherboard.

The main chassis cable Power SW, Power LED, RESET SW, H.D.D LED, F_USB, F_AUDIO, these are the front panel LEDs and cable interfaces.

Power SW RESET SW and cables inside the chassis
Power SW is the most important junction, called PowerSwitch, meaning the power supply switch is mainly responsible for controlling the host computer switch, in fact, its interior is to play the role of short-circuited; RESET SW equally important, called Reset Switch, intended to restart restart the switch, is responsible for the control of the host computer

H.D.D LED and Power LED cable of chassis
Power LED power indicator means, in fact, the power LED lamp power cord, H.D.D LED indicator is hard, that is the hard drive LED lamp power cord.

Chassis front USB 2.0 cable and card reader cable

Audio connection cables on the chassis
USB refers to the front USB port, mainly to provide power and data transmission for the front USB, card reader has some chassis also uses USB interface. HD AUDIO for the front audio interface, that is, headphone and microphone jacks on the front panel, some of the old chassis may use AC'97 interface. If the chassis design with a front USB 3.0 interface, which corresponds to the blue 19-hole plug. Chassis with wireless charging function using the D port as a power supply interface.

Having chassis, let us look at the standard on the motherboard. And chassis wire correspondence, there are corresponding slots on the motherboard area, namely PANEL or F_PANEL, the motherboard also offers many more features and slots, different motherboard design, and there are some marked differences, we need to distinguish clearly.

Most motherboards in the slot area is marked by the different functions of the interface, due to the marked area is small, and some of the shorthand labels on different chassis cable, we also need to look at some pins in most cases will not be used, just to understand its significance.

Motherboard layout PANEL District
Power Switch two pins may be marked with the Power SW, PW, PWR, PWRBTN, POWER, ON / OFF, etc., without connecting the chassis shorting two pins can also function as the power button.

Motherboard layout PANEL District
Reset switch is two pins, the label may include RESET SW, RESET, RES, RST, etc., without connecting the chassis shorting two pins can also play a key role in the restart.
Power Indicator marked mostly PLED or PWR_LED; hard disk indicator marked mostly HDLED or HD.

Motherboard provides front USB 3.0 interface
F_USB refers to the front USB port, F namely front abbreviation. Similarly, F_AUDIO referring to the same front audio interface, and chassis design, F_USB blue 19-pin socket is 3.0 Front USB 3.0 interface.
There are also SPEAKER or SPK, refers to the motherboard work alarm, IR / CIR represents infrared interface, J_PRINT for the printer interface, J_COM as COM interfaces.
Introduced over the plug and the pin description, wiring for all of us is certainly very easy, as long as the corresponding cable to the pins can be.

Black vertical lines on the base pin is positive
Chassis and wiring on the motherboard is not the order of the points, and without all the cables are connected to the motherboard, as long as the need to use cables to connect the power cord and restart the line function is necessary, of course, if you use the front chassis USB and audio interface panel I / O area, also need to connect the corresponding cable.