Review on Kentek Lot of 10 USB Type A Dust Cover with Handle Port Protectors - Black for USB Female Ports by Keith Baker

They do exactly what I wanted. They protect my USB ports in my work machine from dust. I need these ports to work for the short time I'll be using them and I was afraid that things might fall in due to the angle they were sitting. I had to find a way to protect her. They're perfect for this, and thanks to the little extension handle that hangs from them, they're easy to detach and slip into my cup holder when I need to use one.