Cable Matters 5Gbps Long USB 3.0 Cable - 10ft, USB A to B Cable, USB3 Cord with Type-B 3.0 Connector for Hard Drive Enclosure/Built-in Hub and More, Black

The nice thing about the USB-B port is that you can just look at it. The box-shaped USB-B port only supports up to USB 2. The USB-B SuperSpeed cable/port that supports USB 3 speeds looks physically different: https://www.amazon.com/Cable-Matters-SuperSpeed-Type-Black/dp/B00C7RZPJ0