There are two types of the xbox 360 wireless network adapter devices: the one with two antennas, called the Wireless N, and the other device with a single antennae, called the Wireless G. The use of the xbox 360 wireless network adapter will enable you to connect wirelessly, the Xbox 360 console.
The device can allow several players to play on different consoles over a network in the multiplayer set up unlike in the other system known as split-screen multiplayer gaming where all players get connected to one console.
There are devices you may need to have apart from the adapter, so as to manage a system link. These include the Xbox 360 game, which must support the system link play. Apart from this, each console will require a system link cable. You will also need a monitor or television set for every console. Each console will be required to have a game disc. The game must be the same, of the same version, maps and mission updates.