![]() Some USB harnesses have separate connectors for each signal, but the four main ones are the 5VDC + and 5VDC - (GND) and the two data lines, + and. Jcsullivan, the simple answer is there are two USB ports in each MB connector. I'm guessing the shielding pin can be taken out on the keyed side. ![]() Track down the diagram for your card reader and re-arrange them if you have to. Frontx pinout diagrams are included (and on the site). Buy two or just decide which you want to function and buy one. One side will probably be for the card slots, and one side will be for the usb port. I'm guessing you have both media card slots and a usb port on the card reader. The blank keys it, so you can only plug it in the correct way.The cable at frontx will work fine. As can be seen from looking at my plug it would not be possible to plug the 1x5 M plug into the 4 pin side of my plug which means I'd only be able to possibly use which ever reader slots are connected to the 5 pin side of my plug. Perhaps plugging it in so that the black wire of each cable are connected to each other would be the correct way, but I'm not sure. The wires on the 5 pin side of my connector are brown, orange, green, gray and black in that order while the wires of the 1x5 M connector seem to be red, white, green, brown and black going in same order. The USB CABLE 1' - type A M to 1x5 M cable may or may not work, and I'm unsure which way the 1x5 M connector should plug into my 9 pin plug. There is a 5VDC power lead and a ground, then two data leads. But you should be able to check them against the two diagrams above and figure it out easy enough. You can see that USB uses a standard color code. You won't have a extra USB socket on the card reader, but it's much easier. So you only need to hook up the four card reader USB leads. Most readers also have a USB socket and the second part of the dual USB socket is probably for that. The first uses 1,3,5,7 and the second connection uses 2,4,6,8. Each MB connector like this is for two USB ports. Notice one pin is missing for orienting the plug. This is shown from above the motherboard and the card reader would normally plug into this. This shows the pinout of a USB cable at both ends: or this: Īnd this is what the average motherboard USB connector looks like: You would need some small shrink tubing, soldering iorn and solder. Most card readers use a standard plug on the end of the cable to interface with the motherboard card. ![]() Then you can make up a cable using a old six pin USB cable. What you need is the pinout of the card reader and a regular USB port. Well, you would normally want to use USB 2.0 with a card reader.
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