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I ran out of ports on my router which had 4 ports. I needed two more ports. So. I had a spare short Ethernet cord and removed one of the devices, and plugged the patch cord in there. This device DOES NOT come with a patch cord. I powered up the switch and plugged the patch cord into port #1. Apparently I could have chosen any of the eight ports. The cord I had just removed went into port #2. And I added some new devices that needed a hard connection in each of the remaining ports, from the original eight. Each port has a green light which is steady, if it's live, but flashes when data is being transferred. When you turn the connected device off, the light goes out. I can't comment on technical support, because it was very easy. Pro tip: One comment, on several reviews, saying that their device died an untimely death, is that it is really important to have surge protection for the power to these devices. A small power surge can kill these devices. I use a battery backup surge protection to protect the whole modem/router network. Good luck.