What is Reddit's opinion of Super Power Supply 3 x 9dbi 2.4GHz 5GHz Dual Band WiFi RP-SMA Antenna for Routers Asus RT-AC66U RT-N66U RT-N16 AC1750 D-Link DIR-655 DIR-665 N900 Buffalo WZR-HP-G450H Netgear Nighthawk R7000 Linksys?

From 3.5 billion Reddit comments

Hmmm tbh I don't know of a better adapter. Since these are very shittily made, you might want to return it and hope that the new one works better. Apart from that you could try larger antennas. that's what /u/ILikeTurtles9000 suggested when I posted about my Wifi reception issues. https://www.amazon.com/Antenna-Routers-RT-AC66U-WZR-HP-G450H-Nighthawk/dp/B00DMJI9TA/

I didn't buy them until know though, so I can't say for sure that it'll work this way.

It will work just fine for 5ghz. Here's some that say 5Ghz.. Notice how they look exactly identical?

You don't have to get that one. You just need any antenna with a RP-SMA connector. That one's just by TP-LINK and it's cheap.

What about these?

I have this exact setup with 10.12.3 and get screaming fast connections using 80mhz wide AC protocol (my neighbors hate me for using that much bandwidth) - But occasionally it does drop down - not to any limit below my ISP download speeds, so no big.

There are MANY things you can do before you go out and buy new hardware -

• CMD+Click on the wifi icon in your menu bar to bring up the current connection stats. It will show you the channel you're connected to, the noise floor, the signal strength, the speed, your router IP, etc...

• Is your Wifi transmitter 2.4ghz only? Whats the protocol? AC? N? G? ...B??? If your wifi router is capable of both 2.4ghz and 5ghz, you should have both SSIDs and passwords set the same, that way your client can auto negotiate the best frequency at the moment. It should appear as one SSID to connect to.

• Download wi-fi analyzer on your phone and see how crowded your area is. Change the channel manually in your router if needed. Channels 1, 6 11 are the best to use in the US, but look at the channel chart and find a less crowded one and manually set the router to that if you have a lot of neighbors... do this for both the 2.4 and the 5 ghz bands (if available).

• Do you have your network / wifi system preferences setup as DCHP? Do you have a DNS entry in there? Do you have the correct router address?

• Delete the entire wifi entry and set it up again.

• Pull out the card, check that the antenna leads are securely pushed and seated into each of the 3 PCI-e adapter card's sockets (one of the 4 is for the bluetooth antenna)

• Check that the antennas are screwed into the back properly

• Move the PCI-e adapter card to a different slot.

• Move the router to a better area, put all the antennas pointing up. Move the router away from objects, especially TVs.

• Move your computer away from the wall or desk, arrange the antennas better.

• Do you have a USB 3 device such as a NAS plugged into your router? Remove it and test speeds. USB3 cables can interfere with wifi.

• Finally, you could just buy larger WiFi antennas, or even antenna extenders with a desktop mount - wifi antennas are a universal fit (SMA or RP-SMA).

You wouldn't need a range extender for this router. Its badass, currently using one in my 4,000sqft house. If there's spotty reception then increase the transmission power (max setting is 200mW). Now if you need even more range purchase high gain antennas like these: http://www.amazon.com/gp/product/B00DMJI9TA/ref=pd_lpo_k2_dp_sr_1?pf_rd_p=1535523722&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B0046HQKV6&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=133EVW8VM6XRJ6SBHH0W

Also use this firmware as its better then the stock that ASUS puts out,

https://www.mediafire.com/folder/bkfq2a6aebq68//Asuswrt-Merlin

Support for the firmware: http://forums.smallnetbuilder.com/forumdisplay.php?f=42

Why do people always assume things like "air ducts" or "Fuse panels" are causing inference when they are just simply doing the same thing as everything else what's solid would aka block/cause the signal to drop off faster over distance. So your options would be to get better antennas for the RT N66U as the stock ones suck as they are only 5dbi so grab a 3 pack of these Super Power Supply® 3 x 9dBi 2.4GHz 5GHz Dual Band WiFi RP-SMA Antenna for Routers Asus RT-AC66U RT-N66U RT-N16 AC1750 D-Link DIR-655 DIR-665 N900 Buffalo WZR-HP-G450H TP-Link TL-WR1043ND TL-WR2543ND TL-WDR4300 TL-WR940N Amped Omni Directional https://www.amazon.ca/dp/B00DMJI9TA/ref=cm_sw_r_awd_UwG5vbR7XE1E6 and also make sure the 2.4Ghz and 5Ghz channel that your is not overlapping with other peoples wireless that maybe around you and as try putting merlinWRT on your RT N66U and crank up the transmission power and you should have no problems. If your still having issues then buy a cheap access point for her room and plug it into that Ethernet port you say you have and then put it on another channel that won't cause interference with your main router the RT N66U And make sure both signals are named the same and have the same password and settings for connecting and you should be good to go her phone and any other devices should then auto connect to the one that has the best signal and also SIDENOTE if you get another access point I recommend you get an Asus one as they are far easier to work with. I wish I knew this before I bought two Netgear R7000s but I run asusWRT on both. But a worth while access point I would recommend is the Asus RT N12D and just out the merlin firmware on it as well.