Have gained me the caddy for my laptop, so I can replace the AC DVD-Rom drive, I have rarely read DVDs. Now I have installed two hard drives, where the Caddy slow "data" hard drive, which I then can change quickly .... Delivery was not the fastest (from China no wonder) but they came to the announced time and therefore perfectly fine ... So far I have yet to find anything negative, and at the price I think I have not done anything wrong ...