Get protocol version

Inner command APDU info

CLA	INS	P1	P2	Lc	Data	Le
00	03	00	00	(absent)	(absent)	(absent)

Response APDU info

Total Length: variable + 2
Data Length: variable

Data	SW1	SW2
data	90	00

The data is a byte array, where each byte is an ASCII character. Together they form a string describing the version. This is not NULL-terminated. For example, the return data can be the following six bytes.

  0x55 32 46 5F 56 32

These are the ASCII values for "U2F_V2"