Powerline networking carries data over household electrical wiring. It can be useful where Ethernet cabling is impractical, but its performance depends on the wiring and electrical environment. Treat advertised link rates as a specification, not a guaranteed stream rate.
Try the intended sockets
Test the pair in the rooms where it will operate. Extension leads, filters and some electrical arrangements can affect performance. Follow the adapter manufacturer's instructions about direct wall connections and electrical safety rather than improvising around incompatible sockets.
Watch for intermittent interference
A connection that worsens when an appliance runs may indicate an environmental limitation. Note the pattern without opening electrical fittings or changing building wiring. Playback testing across an evening is more informative than one successful download just after installation.
Compare alternatives fairly
Use the same player and stream over powerline and ordinary Wi-Fi. Compare consistency as well as peak speed. If the powerline path is unreliable, a supported access point or a proper Ethernet installation may be a better long-term arrangement.
