What this product is: It extends Wi-Fi networks, by using a dedicated radio to connect to an existing Wi-Fi router. Then it creates a new Wi-Fi network (The extended network) with a separate radio for 5 GHz network and a 2.4 GHz network, using the same IP network from the upstream router (i.e. It is not a flat IP network with multiple Wi-Fi networks).
What this product is not: It's not a router (i.e. it needs an existing Wi-Fi network) and it's not an access point (i.e. it cannot connect over Ethernet to an existing network, only over Wi-Fi).
The hardware is nice: The three Wi-Fi antennas are removable. The enclosure has a nice patterned finish, and can either lay flat on vertical with the included pedestal, which I'd suggest to use because it generates some heat and has vents on both sides. It has some very bright lights on the front, which change color depending on the status (but thankfully, do not blink). Lights are very bright but recessed, and has a physical switch to turn the status lights on or off. Very nice. It has a power switch push button, and five gigabit ports to connect PCs, printers, media players, etc. Also has an USB 3.0 to use as a file server, with an external hard drive or USB stick.
Radios: The 5 GHz radio has configurable channel widths of 80/40/20. (Some few last-gen routers have 160 MHz channels, but are still very rare).
Lots of advanced, low level settings for wireless that are set correctly set by default: TxBeanforming enabled with MU-MIMO disabled, etc.
Very detailed settings for radio power, channels can be left to auto of statically set. The comprehensiveness of the radio options are something I rarely see on home network gear. For the novice can be confusing, but the default values are OK, so if you don't know, leave it as is and should work fine.
For the upstream home network, by default locks into specific channels from the upstream router. It can manually set to auto.
Supports multiple guest networks, that can be separated between 5 GHz and 2.4 GHz radios, with different IDs and permissions. It also has some basic scheduling.
Doesn't support VLANs but supports spanning tree (for business routers), and supports Radius for Wi-Fi authentication (Business use).
This range extender is unique because it has a dedicate radio for upstream connectivity, so bridging does not materially degrade speed as with other extenders.
The range of the Wi-Fi signal is excellent. It covers a medium sized house with two floors by itself with no issue.
However, there are some peculiarities that can be a deal breaker for some: First, the network SSID (The name of the Wi-Fi network) has to be different than of the main router. I find this to be a real caveat because one has to remember to configure every Wi-Fi device with the new network ID, and walking around the house with a PC, phone or tablet, they will try to hold onto the already connected SSID instead of jumping to the closer access point. I tried to manually rename the extended network, while locking on a channel on the home router, and it ended up creating a network loop and had to factory-reset the extender to get it back. I think many buyers won't be aware of this issue until purchased.
Another major issue is that while this is a Wi-Fi extender and works well as that, it cannot easily be set as an access point by connecting it to Ethernet, if needs change.
A minor issue that is also common with other routers is that the file sharing cannot be disabled, even with nothing connected to the USB port. It's constantly advertising itself as a file service although it can't do it.