300 Mbps WiFi Range Extenders: What the Rating Means

It is the advertised maximum wireless link rate under specified conditions, not a guaranteed internet throughput figure.

It may suit basic browsing or a single stream if the real connection is stable, but performance depends on signal, content quality and network use.

TP-Link lists one 10/100 Mbps Ethernet port on the TL-WA850RE. The port can connect a wired client or support its access-point function.

It can often connect when Wi-Fi standards and security are compatible, but the slower device may constrain its own link. Check the model support notes.