My interpretation of the text was that the flash drive should be USB 2.0 compatible, meaning that it supports the higher-speed 480Mbps 2.0 specification and can keep up with the data transfer rates that the radio wants. USB 2.0 can imply either a micro A or micro B connector.
The original USB 2.0 spec specified mini A & B connectors; the later revised 2.0 spec added micro A & B. While this is all rather pedantic, my point is that you can't necessarily depend on your cable end matching the stated spec -manufacturers will do whatever they do.
With all that being said, we agree that this looks like a micro A connector.