Product Review

A keystone module is a standardized snap-in package for mounting a variety of low-voltage electrical jacks or optical connectors into a keystone wall plate, face plate, surface-mount box, or a patch panel. Keystone modules have a rectangular face of 14.5 mm wide by 16.0 mm high and are held in place with flexible tabs. This allows them to be snapped into a mounting plate with correspondingly-sized rectangular holes, called ports.
This USB keystone, a pass-through type connector, is interchangeable, replaceable and provides much flexibility in arranging and mounting many different types of electrical jacks in wall plate or outlet panel without requiring customized manufacturing.