Hi Fangfeng,
USB TAP driver is included in CodeWarrior install folder. But please note, if you use 64bit win7/win10, I suggest you use CW10.x or CW11.x for programming. Classic CodeWarrior 8.3 doesn't support 64bit win7/win10 platform.
when you connect USB TAP with PC only, TX/RX is blinking (red), this is normal.
after downloading code, you should see TX/RX blinking (yellow and green), RUN/PAUSE led is on (red)
Have a great day,
Jun Zhang
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