Custom made 5′ long Atari SIO cable. High quality, 24AWG shielded wire. Every connector has been crimped and heat shrink tubing covered to ensure maximum life. Strain relief ties have been included in each cover to prevent pulling the wire out of the connection.
The Serial Input/Output system, universally known as SIO, was a proprietary peripheral bus and related software protocol stacks used on the Atari 8-bit family to provide most input/output duties for those computers. Unlike most I/O systems of the era, such as RS-232, SIO included a lightweight protocol that allowed multiple devices to be attached to a single daisy-chained port that supported dozens of devices.