MagTek USB MagnePrint Swipe Reader with Encryption - Manual (Page 57)

Section 4. USB Communications
49
Result codes: 0x00 (success)
0x02 (Bad Parameters) – The Request Data is not a correct length.
Example Request (Hex):
Cmd Num Data Len Data
09 0 none
Example Response (Hex):
Result Code Data Len Data
00 0A FFFF 9876 5432 10E0 0001