Wireless Joint

I'm trying EM7455 for Dell with USB adapter connected to win10/8/XP.
Tera Term:
ATI
OK
AT!ENTERCND="A710"
ERROR

Who can tell me what's wrong here?

Sierra card: https://www.amazon.com/gp/product/B07S1 ... UTF8&psc=1
USB adapter https://www.amazon.com/NGFF-Adapter-6pi ... 531&sr=8-3

It's possible the password has been changed. I've always read to stay away from the Dell versions of the MC7455. Not sure why.

Hopefully someone on here can give better answers.