Check the listing for details. DigiChannel Connection Box PC/16i MC/16i 16 (RS-232)digiboard I/O mate interface. Made in United States. Listed at 145.00 USD. SGA-16 The DigiChannel Connection Box is a DigiBoard product designed for vintage computing systems. It is compatible with a PC/16i interface and a MC16I interface. Allowing for easy connection to various I/O devices. The DigiBoard I/O mate interface provides additional connectivity options, making it a versatile tool for users looking to expand their vintage computing setup. With its reliable IBM brand, this connection box is sure to enhance the functionality and capabilities of your computer system. Connection Box is pre-owned in excellent condition.