Polytree 2 Pcs/Set USB 3.0 Vertical Male to Female Left Angle and Right Angle Adapters USB 3.0 right angle coupler adapter enables the use a USB port on the back of your computer even when space is tight. This adapter allows you to connect a cable from the left side of the front of the computer. Allows you to connect cables from the left side of the front of the computer. Take full advantage of USB ports on the back of your computer even in tight spaces. Does not affect throughput. Type-A Female to Type-A Male.