MY sd card has 8 pins. I read that sd usually have 9 pins.
Is it the ground (3 pin), which is omitted,as 6 pin is gnd available
http://en.wikipedia.org/wiki/Secure_Digital#Technical_details

 

what card are you using? pictures? datasheets?

 

MY sd card has 8 pins. I read that sd usually have 9 pins.
Is it the ground (3 pin), which is omitted,as 6 pin is gnd available
http://en.wikipedia.org/wiki/Secure_Digital#Technical_details

Here, let me Goggle that for you. <== CLICK THIS LINK !!!

The very first link image Google returns appears below: