Originally Posted by
Jimbobgod1969
To answer your questions:
1) Currently the fastest powerline standard is rated at 500mb/s, but in practice you will probably get nothing approaching that speed. I have three of the slower 200mb/s adapters, and in the same room as my internet connection, I actually get about 20mb/s. In my experience powerline adapters are indeed more stable than wi-fi, but not necessarily faster - the new ac wifi standard is rated up to 1300mb/s, for example. The speed of the connection is very dependent on the cabling in your house, too; so your mileage may vary. If you live in a flat with share wiring, you may want to turn on encryption to keep your data private, but that will also slow down your data rate.
2) Yes, you should be able to use as many as 5 powerline adapters, but if all are active at the same time, the available bandwidth will be split between them.
3) Yes you can plug powerline adapters into an extension, as long as it isn't surge-protected (which stops the signal working, apparently). An extension will probably reduce the speed of your connection however, and most powerline systems say it's best not to do so. You can get 'pass-through' powerline adapters which allow the socket to be used by other appliances, but they cost a bit more.
4) From the reviews I've read, Solwise 500mb/s units do quite well, but I haven't tried them personally.