I have a PT for my 510 and used it on my desktop computer and the monitor USB ports. It would work for a while then just quit and then start again for a short time. I thought the PT was bad until I plugged it into an AC USB adapter. This works just great and because it has a red or green light on it I can see when it is charged. The 510 runs off of the battery and the USB plug charges the battery. My battery was dead because it wasn't getting charged properly off my computer or monitor. Now all is well and I will use an AC charger all the time.
Here is a cheap one;
USB Power Adapter
I did this too, although my AC-to-USB-5V does not have a light. I also have an external powered USB hub. Tried leaving them plugged in overnight, but no go. This was the case with all of them, and also switching the 10440s I had between them. The only thing I could conclude was all the
batteries were dead. One would work sort of for a puff or two and then go dead. When they worked I pushed them very hard, so they may have just used up their charging abilities.
BTW I also had for a while the same AC adapter you linked here, but the light went out completely, and at the time I concluded that this little $2 unit had died. For $2 I got more than my money's worth, but I felt it best to try a $30 Radio Shack variable voltage unit, so I could try higher voltages later if I wanted to do modding.
Until then I have plenty of mega and regular batts and a charger, so I am ok until the batts come. I almost hope it is the PTs and not the batts so I have an excuse to pony up $50 for the Bart.

Oh the excuses we come up with...