It will work, but only at the 3.0 Gbps supported by the motherboard.
Since the motherboard side of a SATA cable is standardized, buy a cable(s) to connect the drive with the motherboard and the PSU at the same time in the same order. Any shop that sells a SATA disk should sell the cables to use it also.
My system's motherboard is Intel DG31PR, Processor Core 2 Duo E6550.
My current HD is WD1600AAJS-22PSA0
Interface: SATA 3 Gb/s with 22-pin SATA connector/SATA 1.5 Gb/s with 22-pin SATA connector (Mobile)
SATA type: SATA-II 3.0Gb/s
Now I am looking to purchase WD Blue WD10EZEX which is SATA 6.0 Gbps
Please suggest whether it is compatible? Its costing me 4200 Indian Rupees on flipkart. Is it worth it?
Do i necessarily need to have 4 Pin and SATA Data to Combined SATA 22 Pin Power and where may I find if as I am not able to get it at online portals (India)