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FreeCalypso DUART28 is our official adapter for connecting from a USB host (such as an ordinary PC or laptop) to the dual UART interface on our Calypso development boards. This DUART28 adapter works with our current FCDEV3B, and it will also work with our upcoming Caramel2 development board.

FC DUART28 is based around the very mature FT2232D USB to dual UART adapter chip from FTDI, but it differs from a generic FT2232x breakout board in that it is specifically designed for FreeCalypso:

Because of its specialized nature, DUART28 is not intended to be a product in its own right, instead it is an accessory to be supplied with our FCDEV3B and Caramel2 development kits.