System Link
System Link is a form of offline multiplayer gaming on the Xbox and Xbox 360 gaming console over a LAN (local area network). A network switch and standard straight-through ethernet cables may be used to link multiple consoles together, or two consoles can be connected directly. Connecting two Xbox consoles to each other without a switch requires a crossover cable, while Xbox 360 consoles can use standard cables.
The purpose of this is to have multiplayer gameplay on multiple consoles, which allows for a non-split screen multiplayer gaming experience and far more players in one game than a single console can support. Halo: Combat Evolved allows up to 16 players on split screens on four consoles to partake in a simultaneous 16 player game. Later, post-Xbox Live games such as Halo 2 and Unreal Championship supported more consoles per game than the maximum of four supported by Halo.
The Xbox 360 can not only use wired ethernet to connect to a LAN, but also use a wireless adapter (such as the Xbox 360 Wireless Network Adapter in an access point-based or mesh network. Additionally, some Xbox Live titles like Halo 3 can play a match with players connected over Xbox Live and on the same LAN.