I had placed an order for one 3.5 USB IDE Hard Disk Drive Case Casing PATA through Rediff Shopping vide order # 6451572 dt. 15.05.2011, which I have received from the supplier Al Systems & Solutions through Blue Dart (Cong. # 44098840881). But unfortunately they had not supplied the Power Adapter for the same within the box. After many persuasion and emails to both of them, Al Systems & Solutions had sent an adapter on 24.05.2011. But the Case Casings voltage pin connections were different than that of the adapter. Actually, the adapter supplied later was a wrong adapter. There was a voltage pin diagram on the casing of the adapter but on the casing of the HDD, there was no such diagram or details. So primarily I was unable to notice that the adapter was not suitable for that HDD Casing. When I had connected the adapter to HDD casing and powered on, both the adapter & casing suddenly got tremendously hot and all had burnt out inside including my HDD. Then I had opened the pcb of the case casing & the adapter and noticed the mismatch of the voltage pin connections. Al Systems & Solutions, who are selling computer peripherals, and also Rediff Shopping, both are reluctantly deals with the customers complaints and send whatever they have in their stock intentionally, as because they get the money before the supply. I have lost Rs. 637/- being payment made to Rediff Shopping and also a good HDD of mine.