fyi.
If anybody is interested, there are ASUS notebook adapters you can use for the G20CB if you have any problems to find adapters specifically sold for the G20CB although the notebook adapters use curved tips instead of straight tips if it matters, but should still work.
Anyway, the 180w notebook adapter for the G750JX, G750JW, G752VL, G752VT, and some other models as well as the 230w notebook adapter used by the G750JH, G750JZ, G751JT, G751JY, G752VY, and some otherr models should also work for the G20CB if you want to look into it.
Thanks.