I have never heard of jumper settings, but I take the implication from your comment that it is common, when there are two power ports, for one of them to be switched off? Is that right? And so it would be feasible for me to change it myself without returning yet another power adapter? I thank you very much as this would be crucial information.

I don't know the answer to your question about which one my original adapter used. That is the purpose of my post. I'd like to know which port anyone's working adapter used. But it seems extremely likely that it used the larger one at this point.

I did not want to ever have to open up this case. I read reviews before I purchased it, and the harshly negative reviews often cited the difficulty in making any modifications oneself. But I was getting a big discount and decided, okay, I probably didn't need to upgrade it anyway. This experience has been endless frustration.

elbonians wrote:
I have never heard of jumper settings, but I take the implication from your comment that it is common, when there are two power ports, for one of them to be switched off? Is that right? And so it would be feasible for me to change it myself without returning yet another power adapter? I thank you very much as this would be crucial information.

I don't know the answer to your question about which one my original adapter used. That is the purpose of my post. I'd like to know which port anyone's working adapter used. But it seems extremely likely that it used the larger one at this point.

Saw your PM elbonians, but thought it would be better to post at your thread to share and get more opinions.

1. The G20AJ models can be using just the 180w adapter, or just the 230w adapter as well as both 180w and 230w AC adapters depending on the video card installed from the factory.
1a. We actually have an FAQ on the ASUS website about this, but I'm showing the G20AJ models use the AC adapters below with corresponding vga cards below:
- 180w Adapter only: GTX745 and 'lower end' vga cards
- 230w Adapter only: GTX750 vga card
- Both 180w+230w Adapters: GTX760 and 'higher end' vga cards

2. You should be able to figure out which AC adapter(s) you need to use for your G20AJ according to your vga card installed, but if you were using the 230w adapter originally, and are now using the 180w adapter, you may see some power-related problems under heavier loads, so something you may want to keep an eye on as well as make sure your 180w adapter isn't getting too hot (it may not last too long as well?).
It's really better and safer to use the 230w adapter if that is what your system originally came with though, so try to arrange this as soon as you can.
2a. You may already know this, but if your system originally came with just 1 AC adapter, you should not need to change jumper settings if you are using another AC adapter of the same wattage.
Most G20AJ customers may be concerned about jumper settings when they want to start using 2 AC adapters instead of just one, but someone may want to correct me if I'm wrong about this.

Well, feel free to discuss and hope this helps clear things up some. Thanks.

elbonians wrote:
Interesting. I actually have an Intel HD 4600 which must be what you mean by "lower end". Even though the box that Fry's sold it to me in clearly says

VGA: NV GTX750/2GD5

They slashed the price (-$45) one final time before they could sell it to me, and I forget the details of that but I dunno, maybe that was the reason.

Good to know this power adapter should be fine with it. The performance has always exceeded my expectations so I'm not bummed about it.

fyi.

As far as I know, all the G20AJ models will come with both the 'discrete' nVidia 'plug-in' vga card as well as the Intel integrated graphics that comes with the cpu, so basically your unit has 2 vga cards if you weren't aware of this.
If you right-click the bottom left-hand corner of your Win8/Win10 desktop and choose 'device manager' in the menu that pops up, expect you should see both the Intel graphics and nVidia graphics under your display adapters, otherwise we may want to look into it more.

The nVidia vga card will be better than the Intel graphics for games, so it's something you want to have on this unit or at least start worrying about if you're not getting good graphics performance with any games or software.