I bought this for my Toshiba Satellite C50A-i2012 laptop at Rs.429 (incl shipping). It was delivered through Delhivery. I've been thinking of upgrading my laptop with an SSD for a while now. Recently I bought the Sandisk 120GB SSDPlus SSD for Rs.2.3K from PrimeABGB. My laptop had a 9.5mm ODD so I bought the 9.5mm caddy. There are other variants available of the same. So make sure you buy the compatible one.
If you're using the new SSD/HDD to load an operating system, then follow the steps given below for Windows 7. Note that most of the laptops that are 2 or three years old, or low performance ones come with SATA 2 ports. SATA 2 has a max speed of 3Gbps (375 MBps). But today's SSDs are SATA 3 capable with speeds up to 6Gbps (750 MBps). So you need to install the SSD onto the fastest port available. You can use Piriform Speccy to determine which ports you have. If both SATA ports of your laptop are SATA 2, then you can install it anywhere. The caddy's output connector is a SATA + Slimline power connector. So this might confuse you as it is different from the SSD's or HDD's connector. Slimline connector is a reduced version of normal SATA power connector. So it doesn't affect the speed.