How is your network structured?

[TheBigB]

They are probably range extenders, while they may look like PoE adapters.
Anyway it also greatly depends on your electrical wiring and configuration, which here at home seems to suck. There seems to be a lot of interference. I have adapters with max 200mbps, but they are usually only providing throughput of 15mbps...

[dbasnett]

They are probably range extenders, while they may look like PoE adapters.
Anyway it also greatly depends on your electrical wiring and configuration, which here at home seems to suck. There seems to be a lot of interference. I have adapters with max 200mbps, but they are usually only providing throughput of 15mbps...

Are you talking about Power of Ethernet (POE), or do you mean Power Line Carrier (PLC)? If you mean the latter here are some thing to look at.

1 - Are the devices on the same phase.
2 - Do not connect the PLC device to a surge protector or an outlet with a surge protector.
3 - Avoid outlets that have devices with motors.

I worked for a startup that did PLC for hotels and it was normal to be able to provide internet access for a 100 room hotel in a day.