Features:
Compatible SD card, Micro SD card and SDHC card supportable.Prototype expand Library support
Size: 53mm x 47mm
Weight: 35g
Pin With SD Card 5V
VCC ---3v3
GND--GND
D13---SD_CLK
D12-- SD_OUT
D11---SD_IN
D10--SD_CS

1.The shield is missing pins for SCL and SDA
If you need those two for I2C communication like a display shield, you have to use Analog pin 4 and Analog pin 5

2. How to build an eeprom programmer to program 2708s for computer?
A: Set the switch to "3.3"and pressed on, SD cards require 3.3v or you could damage them.
B:Installed the shield on a Mega 2560 R3 if you need lot of I/O pins forprom programmer,You can plug any shield, in general, into any Arduino as long as you "match" up the pins which are marked.
C: Installed the shield on Mega,put the shield on the Duemilanove, changed the chip select pin to "10" again, and Cardinfo ran. Note that when you compile using the IDE, you have to CHANGE the target board to the board you are using or it just won't work.
D:when you modify the code, make sure that you replace "10" with "53".

3.You can by googling ""SD shield 3.0"" and clicking on the iTEAD wiki link.
A-Put the SD shield on whatever arduino you have. Using the labels on the shield and arduino, make sure the pins match.
B-Use the wiki instructions' "Compatibility" section to find out what position the 3.3V/5V selector switch should be in, and whether you need to remove ALL 3 of the adjacent SPI Jumpers on the top of the board given the arduino board you're using. For the arduino DUE,you can remove these jumpers and keep the switch on 3.3V