good morning. do have large quantity of usb cable to use with my new laptop and projector I purchased from Best Buy?

Check their website for what you need, if not, check Amazon too.

I try not to shop at Best Buy. Bad experiences there.

Yes

I am assuming you are asking if Best Buy has a long charging cable. I would call them and ask.

I would reccomend you go to the website and see if they have it just to be sure.