USB to UART converter cable. Provides logical-level signals for TX and RX, optionally provides 5V power output. Can be used with the same cards than the RS232 adapter, i.e. cards that have only logic-level UART pins.
It works with Simple DSP Boards, Prototyping Boards, VS1053 USB Hi-Fi Player Board, VS1003 SD Card mini player, VS1000D Button-Cell Player, VS1000C Audio Module, and other boards with only logic-level RX / TX signals.