I have a N150 modem router and from it I use wireless for laptops but also cabled powerplugs to my main pc. The powerplugs are 200Mbps units. In the powerplug utilty it shows the connection between the pc powerplug and the one connected to the modem router is running at 195mbps. How can that be possible if I only have a N150 modem router?
"I have a feeling mine supports up to 100Mb on ethernet slot. Can I buy a 1Gb ethernet card to slot into motherboard?"
Yes you could, but remember what I said in my previous post, your router supports a maximum speed of 100mbps so you'd need to buy a gigabit router as well. After doing that, your Internet speeds will remain at the same 4-5mbps.
Perhaps it would help if you told us what you're trying to achieve. Are you perhaps wanting to stream high-definition video across your home network?
"In the powerplug utilty it shows the connection between the pc powerplug and the one connected to the modem router is running at 195mbps"
That tells you that the homeplug-to-homeplug connection can operate at a maximum of 195mbps. It doesn't mean that your Internet or other parts of your network are operating at that speed too.
Thanks for all your replies. From your comments to notice real change in my broadband speed the main thing would be to up my broadband speed package, upgrade ethernet slot, router (if new broadband package doesn't provide one) and homeplugs. But to make all those changes and the cost for my use needs is not practical. My main use is some video work and video clips and sounds from Youtube. My isp provider is bringing fibreoptic to my area in October which they say is a 36Mb download speed line although on my line they reckon it'll be max 21Mb. But still better than my 4-5 I get at the moment. I may review my router etc then as kids are getting older so their internet needs may get more demanding