A. Model: TC300/TC350, TC400/TC450, TC500/TC550, OC500, A10/A20/A30/A300, EP10/EP20/EP30/EP300, D100, D200, T60+, VF30/VP30, OA1000, OA3000, C2, C3, C5
B. The new hardware platform model which is released on 2011 should use Device ID instead of device's serial number when we call the functions in API.
C. The function "CKT_RegisterUSB" and "CKT_UnregisterDevicd" are for the new hardware platform model which is released on 2011. The older hardware platform call the function " CKT_RegisterSnoWithBaudrate".