power-connecter size

[Domdomfish]

How can I find my power connector size and/or type?

[Huffer]

You mean the AC adapter? Or just the tip of the adapter that plugs into the laptop?

Smart AC adapters (power factor correction (PFC), 4.5 mm)
330 W, right angle

AC adapter, 330 W (PFC, 4.5 mm) M34603-001

https://www.ebay.com/itm/335481567031?itmmeta=01J316ZFEM53DDWM9MSYH3H0DH&hash=item4e1c427737:g:ex0AA...

This is a massive power supply. 330w is about as powerful as they get. 

[Domdomfish]

Hi, I meant the tip. I want to use type c adapter like in the picture I sent. 

[Huffer]

You are not going to find a 330w type C adapter I'm afraid

[Domdomfish]

I am expecting to be able to use 100w 20v with an adapter above for light tasks

[Huffer]

I think that is an unreasonable expectation. I think you could (maybe) use that to trickle charge the laptop when it is powered off, but I would not use it while it is on. The laptop adapter is 19.5v, not 20v. Underpowered and overvolted would not be a good combination and I think over time would cause damage. I would predict the laptop might cut off in use with that attached. I doubt it is ever drawing less than 100w of power and certainly not when any kind of video is being processed including online movies like youtube.  Anyway, at your risk, the adapter tip is 4.5 mm long right angle and will be center positive. Good luck.