When my friend’s Card Reader goes something wrong, I tried to fix it and found that the wires are pulled out. So I found the solution (shown below) to resold the wires back into its position.

Pin
one side		 Signal Description Pin
other side
1 USB Vcc (Vbus) usually RED, wire should be 20-28 AWG 1
2 USB Data - usually WHITE, wire should be 28 AWG 2
3 USB Data + usually GREEN, wire should be 28 AWG 3
4 GND usually BLACK, wire should be 20-28 AWG 4
USB D+ and D- are twisted in cable. Outer shell is made of copper braid and aluminium shield.
Source: http://pinouts.ru/SerialPortsCables/usb_cable_pinout.shtml