Yes, this pc does have an expansion slot for the 2.5 inch drive. I have been struggling for some time to find a way to add my 1TB samsung EVO SSD Drive to the PC, until now. Simply contact HP support via chat, be ready to have your serial number and product number ready. Product number is 3WW57UA. Chat with them and they will place the order with you via the chat and a secure payment portal on their site. This will allow you to get the exclusive drive cable, which I have received.