A connection apparatus includes: a housing case, where the housing case includes a first side face and a second side face that are intersected and disposed adjacent to each other; a first connector, disposed on the first side face and configured to be connected to a connector of a first line card, so that the connection apparatus is orthogonally connected to the first line card; and a second connector, disposed on the second side face and connected to the first connector. The second connector is configured to be connected to a connector of a network board. The connection apparatus can improve a capacity of the communications device.