lan5160t4, is this a legit product, if so where's the documentation and dll

adaptation

I bought a lan5160t4, they seem to be available everywhere, amazon, ebay, aliexpress.  They are branded Digital Dream but it does not show up on the official website anywhere. The thing looks great, small size should do everything I want it to do but the problem is I cant get it to do anything. There is no documentation on how to connect it to the computer.  It says it does both direct connection and router connection (dhcp i presume) but it's not asking my router for an IP and I don't know what it's default would have been set to.  Even if I knew the IP if it does not have a web interface or anything I don't know how I can make it do anything. Honestly I would adore the thing if I could get it to speak modbus TCP, if it had that and ethercat a bajillion of them would sell, but as it stands it's just a paperweight.