Can anyone provide a link to a currently available and confirmed working USB to 3.3V TTL converter that works at 1500000 bps? The PL2303 I have technically supports up to 3 Mbps but only in certain discrete steps, and 1500000 is not one of those steps. The MCP2221A only supports up to 460800 bps. The FTDI FT232 data sheet claims support up to 3 Mbps but is unclear about whether arbitrary baud rates are supported, or only discrete steps like the PL2303. Searching for a compatible USB-TTL cable to