Link cable

Link Cable

The link cable is the Game Boy's serial connection, letting two consoles communicate for multiplayer, trading, and data transfer. It plugs into the link port on the side or top of each unit and carries a simple serial signal between them. Despite its simplicity, it enabled some of the platform's most memorable features.

What it is used for

• Multiplayer in games that support head-to-head or co-op play.
• Trading, most famously creature-collecting RPGs that require swapping to complete a collection.
• Chiptune sync, where musicians clock multiple consoles together for performances.
• Data transfer in homebrew and utility software.

Connector types

The original DMG uses a larger link connector, while the Pocket, Color, and later models use a smaller one. Adapter cables and universal cables exist to bridge the two, so an older DMG can link with a newer Color. Always check that your cable matches the ports on both consoles, or carry the appropriate adapter.