Came across a bunch of these in the servers that I got in. Never seen them before. What type of connection do they take, and can anyone tell me what I need to buy so I can wipe them?

Here is a picture of the connection.

if I dont answer anymore tonight, I am in the process of processing all the servers I got it, getting stuff listed on ebay for sale, and then hitting the bed. If I remember, I will check back.