Sometimes I need a USB DVD drive, sometimes an external hard drive, and the real reason I bought

For some strange reason the first port from left to right usually fails so I must try the others

To their credit Anker did contact me - twice - but, for some unknown reason, both of my replies went unanswered

Will not work with Logitech Unity receivers, the reason I bought the product.

Works exactly as it needs to

Everything works as it should.