I imagine that those who find this through a search already have some knowledge, but for those who are wondering "What is this?", let me explain: this is a PLC adapter, which connects to the internet via your electrical wiring. Specifically, you connect one adapter to your router with a LAN cable and plug it into a power outlet. Then, you connect the other adapter to a device like your computer with a LAN cable and plug it into a power outlet. Next, you press and hold the setup button on the router-side adapter (set as the master) until it starts blinking. Then, you press and hold the setup button on the computer-side adapter (set as the terminal). This synchronizes them, and your internet connection is established. However... I don't like to deceive people, so I'll be honest. While you can certainly use this, the communication speed isn't fast. Also, it's susceptible to electromagnetic interference, and the connection will be interrupted if it's plugged into an outlet near something that emits electromagnetic waves, like a microwave. In such cases, you're better off buying a router with a repeater function, as they're available these days. So, who is this suitable for? It's for people who don't mind slow internet, don't know how to connect a router with a repeater function, can't afford one, or don't want to go out and buy one, but can't get an internet connection because they're far from the router. ← Are there even people like this? Thank you for reading.