I bought a pair of these to replace much cheaper TP-Link adaptors that gave nice fast speeds with BT Infinity, but kept cutting out - that is, the remote adaptor would lose its connection to the router, despite the lights indicating that all was well. Sadly, for the past few days the Solwise adaptors have behaved exactly the same, despite the description "best for noisy wiring" - they give a fast, but unreliable connection.
This problem has me baffled. I live in a modern house *without* noticeably noisy wiring (i.e. no flashing lights, blown fuses or computer crashes) and devices connected wirelessly are fine. Both the router Homeplug and the remote one are plugged directly into mains sockets with no other devices attached. The Solwise adaptors showed a full strength signal (all green lights on both adaptors) but would lose the connection between the router and the remote PC at random intervals, at least once each evening. I know it's not the router at fault because I tried swapping this while using the TP-Link devices and saw the same behaviour. The 500MB adaptors are replacements for Netgear ones that never cut out when used in exactly the same environment, but ran both hot and slow.
Sadly, I will need to return these for a refund. I would need another pair to run a printer and a networked (non-wireless) TV and - unlike the TP-Links - they are just too expensive for devices that don't work reliably.
Good units quicker to instal than to read the instructions. Works extremely well I had trouble with wi-fi in a couple of locations these adapters took care of that with no problem, if you thinking of buying them consider how far from the plug you are as the included lead is only 90cm long. But overall a really good purchase
Bought this as was having problems with another makers home-plugs with interference on the voltage lines causing drop outs. Plugged these in place of those and have been working perfectly with out any more dropouts well worth the money. Also no setup required just plug and play.