Native USB, usb to Uart? - SOLVED

[jim-p]

@josephchrzempiec

What would be better.

As I said it could be faster than either but depends on what is connected.
Is 53Mbits/sec fast enough?

UMFT4222EV-D - FTDI

[westfw]

@jim-p

[USB to SPI bridge] Is 53Mbits/sec fast enough?

Probably too fast. Few Arduinos can do SPI at 53Mbps.