I don't know where that came from, but that's not a flash drive and never was. It looks to me more like a D-Link USB wireless adapter. I have a nearly identic

I don't know where that came from, but that's not a flash drive and never was. It looks to me more like a D-Link USB wireless adapter. I have a nearly identical one to that, except for a different hardware revision. That one looks like a B1, whereas mine was a revision A. There's also a MAC address printed on that label.