Hi i have NBN crap. It is in garage seems to be to far away for good connection. Son can't play Xbox, super slow to load computer etc. Can i get the power connector thingys (from optus) to try and get better speed etc. Thanks
So nothing to do with NBN then? NBN provide a connection point to your property. What you do with it after that is your decision.
What sort of NBN do you have? FTTP, FTTN or HFC cable? What plan speed are you on 12? 25? 50? or 100?
Are you currently connecting everything via wifi?
Simplest way to bring the connection to a better place is just buy a 30m CAT5 cable and plug it in to the garage modem and then rollit out to your house.
The power adapters may also work well but its not a given. Sort to buy them here
So you have a hose (100 FTTP) providing internet to your garage that you then pipe through a straw (wifi) to your home.
Not criticising, just painting the picture.
As an aside, If you wanted to save money you could drop the 100Mbps to 50 or even 25 without much difference in speed available in your house.
I would strongly suggest you look at how you could run a cat5 cable from your garage to a wall in your home. Under floor, trench, in the roof, etc. Its cheap and you can plug your modem in, inside your home which would provide much better wifi. You could also then plug the power adapters in inside your home to provide even better connection to other rooms.
You can also try the power adapters which will likely improve the situation.