Can be returned once opened. I was afraid to open it, suspecting I would be wrong like many reviewers on other product pages. All the sellers promoting this product seem to be doing the same thing: they are selling an old, bulky, cheap adapter and using a fake photo like a bunch of scumbags. Microsoft sells the same item for $25 - that's worth an extra two dollars to get what I paid for in the first place. I can't believe I fell for this.