Solved Which is VCC and GND in this USB cable?

Imrankhan

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I am trying to create cooler pad for my laptop. I have 3 5Volt fans. I pulled out two usb cables from old keyboard and a mouse. Things are different here. I heard it would be Red, White, Green, Black will be inside.
But what I got from both is this. I see no black. but a blue one.
20140906_141013.jpg
Its from Intex Usb Keyboard and Mouse bought in India. I tried using my skin(i have no multimeter), Red Green and Blue show some power. But white is dumb. I think white is GND.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64bitIntel Core i7 2670QMSamsung 8GB 1333MhznVidia Geforce 540M GT 2GB
Computer type
Laptop
Computer Manufacturer/Model Number
Dell XPS L502x
OS
Windows 7 Home Premium 64bit
CPU
Intel Core i7 2670QM
Motherboard
Intel HM67 Mobile Express Chipset
Memory
Samsung 8GB 1333Mhz
Graphics Card(s)
nVidia Geforce 540M GT 2GB
Sound Card
Realtek High Definition Audio
Monitor(s) Displays
15.6" Dell Standard RGB-LED Backlit Display
Screen Resolution
1366x768
Hard Drives
Seagate Momentus 2.5" 750GB HDD 5400rpm
Internet Speed
3.1 Mbits/s
Antivirus
AVG Free, Kaspersky
Browser
Google chrome
Got it. Blue VCC, Red GND.
Tried connecting all cables randomly to fan. And found the working combination.
 

My Computer My Computer

At a glance

Windows 7 Home Premium 64bitIntel Core i7 2670QMSamsung 8GB 1333MhznVidia Geforce 540M GT 2GB
Computer type
Laptop
Computer Manufacturer/Model Number
Dell XPS L502x
OS
Windows 7 Home Premium 64bit
CPU
Intel Core i7 2670QM
Motherboard
Intel HM67 Mobile Express Chipset
Memory
Samsung 8GB 1333Mhz
Graphics Card(s)
nVidia Geforce 540M GT 2GB
Sound Card
Realtek High Definition Audio
Monitor(s) Displays
15.6" Dell Standard RGB-LED Backlit Display
Screen Resolution
1366x768
Hard Drives
Seagate Momentus 2.5" 750GB HDD 5400rpm
Internet Speed
3.1 Mbits/s
Antivirus
AVG Free, Kaspersky
Browser
Google chrome
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