MERCUSYS Range Extender T9E AX1900

Works great. Reliable connection and high speeds. Running standard Windows 10 and no issues with installing the drivers. Loaded them on a flash drive from another machine. Copied them over, installed, and I was up and running.

I don't see it in the description anywhere, but the product is EU version. I am replacing a different TP-Link Archer T9E that shorted out when I was reconfiguring the layout of the components inside the case; I accidentally had 'Wake on LAN' set and when I plugged the card in the system fired up and the card shorted...whoops. That card performed really well, so I thought I would get another. This new card was terrible right from the get-go. I uninstalled previous TP-Link drivers, downloaded new drivers (even though they don't appear to have been updated in 2 years so probably the same driver), and connected to network. 2.4 band will only connect at 215.5 full signal. 5 band will only connect at 58!!! If I set the control channel of the 5 band to anything in the 100's (149, 153, 157, etc.) then the 5GHz band disappears altogether and the card will only connect to the 2.4GHz network (if you have dual-band access point). This was not the case with my US version Archer T9E. I have a T6E and even a WDN4800 running in other machines that are faster than this EU version T9E. tldr: EU version bad, returning.

This wifi card freezes / crashes windows 10. Product came with an installation CD that is completely in chinese, which is useless to me. After installing drivers from TP-Link website, my Windows 10 system would repeatedly freeze & blue screen crash. Removed card & drivers and system is stable again. Returning this product as it doesn't work for me.

Ok

Forget about your 5ghz band if you’re not close to the router, it won’t pick it up. Even the 2.4ghz band connection goes in n out

I've got an Orbi wifi mesh in my house and I'm less than 6 feet away from the satalite with no 5G registering. I've tried reinstalling drivers, reinstalling windows, using the "Utility" program, which isnt even supported in Win10 without compatibility mode and I still only get the 2.4ghz network. All other 5Ghz devices in the house work just fine. If I choose in the advanced options to prefer 5Ghz it will still only connect 2.4. If I choose to disable the 2.4 band it wont connect to anything. I wish I could return this product.