xilinx starter india
Those are very different boards with different FPGAs. One has Spartan-3, the other has Spartan-3E. You can read about them on the Xilinx web site:
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Xilinx use to sell different kits for different countries. In the part number, "UK" means it has a power supply/cord for that country. Now, instead of selling multiple versions, Xilinx sells a universal "UNI" version that includes power adapters for several countries.