I needed wired internet in other rooms, in the back and upstairs of my house. These adapters made it happen. It was SO easy to set them up and I immediately had the service I needed. They provide full speed wired connections with zero lag or packet loss. Even my "ping" is not noticeably higher than when I was right next to my FiOS modem. I just bought another pair, so I could add my kids' upstairs bedrooms to the household ethernet/coax network, rather than them having to use WiFi or me having to run an RJ45 style cable up the stairs.
The ONLY drawback is they can not be used on any household coax over which another signal is being sent (FiOS TV/cable TV/et cetera). Since I got rid of cable and strictly watch internet TV, it's no hardship for me whatsoever.
HIGHLY recommended.