What is this?

Been wanting to make a home server with some roommates and I just found this at a thrift store. Is this a hub? A switch? Trying to decide if we use this or resell it and look for something else or if this is what we need. Can't find any information on this specific product.

Been wanting to make a home server with some roommates and I just found this at a thrift store. Is this a hub? A switch? Trying to decide if we use this or resell it and look for something else or if this is what we need. Can't find any information on this specific product.