Actually the extra pin or pin 4 is typically not connected in the normal usb cable but if it is connected to ground pin the phone will turn in a host mode and will be able to read. The red one is to get sure wire with dc ability of 5 volts.
Usb Wire Diagram Low Voltage Power Extension Cable Cableusb
Usb otg cable wiring diagram. Typically it uses black black white and red wire colors. Black wire serves as floor exactly like in any other apparatus. The red one is to get sure wire with dc ability of 5 liter. In accordance with wiring diagram for otg usb there are just four wires used inside the cable. Typically it utilizes black black red and white cable colors. Below is the figure showing the pinout diagram of the usb micro b and usb a wiring diagram.
In accordance with usb otg wiring diagram there are just four wires used inside the cable. This cable is most commonly used in mobile charger for charging mobile phones and as a usb data cable to connect mobile devices to tranfer files and images between personal computers and phones. The usb device that uses full speed bandwidth devices must have a twisted pair d and d conductors. Pinout of usb micro plug to usb standard receptacle for use with usb otg on the goallows portable devices such as cell phones which support otg to connect directly to other devices such as usb keyboards mice and mass storage devices. Usb a b 20 and 30 cable pinout. I made another schematic how you should wire things up so the usb will work as a host or otg mode.
Type a usb pinout diagram micro usb pinout diagram along with usb wiring diagram. Black wire serves as ground just like in any other apparatus. A lot of people wonder why have micro usb 5 pins instead of 4. Before wiring usb you need to know the pinout diagram of usb. The data is transferred through the d and d connectors while vbus and gnd connectors provide power to the usb device. The usb cable provides four pathways two power conductors and two twisted signal conductors.
Gallery of Usb Otg Cable Wiring Diagram
