All the keystone couplers are female to female and easy to install directly.. Standard size and Easy snap-in installation of compatible keystone jacks. Provides a professional installation for different types of keystone jack inserts. With screws. The F-type Coax/Cable TV port is standard and gold-plated. The power outlet must be installed by an electrician and a split box must be used to separate the power outlet from the low voltage cables in the wall. All the keystone couplers are female to female.