Hi,

I see this on the documents page:

So there is both the older and newer WiFi options for this Alpha R2. Was yours shipped with the Wireless N/ac adapter card?

Also, Dell seems to have marketed the Alpha R2 under Alienware Desktop but the support page is shared with the Alienware Steam Machine which is a console I believe so if you haven't posted in the Alienware Console community page, I recommend you post the same question there too.

Alpha R2 is not the ASM100 steam machine.

Default card on this model is 2.4ghz only.

• Intel Core i7-6700T 2.2GHz; 1256GB SATA; 16GB DDR3
• NVIDIA GeForce GTX 960 4GIG

The ASM100 has GTX 860 with 2 gig video ram.

ALPHA R2 also has the amplifier connector whereas the ASM100 steam machine does not.  Easiest way to fix this is to remove the onboard wifi and use Edimax EW-7811UTC AC600 Dual-Band USB Adapter wifi adapter.  Windows 8 and 10 this is plug and play.

https://www.walmart.com/ip/Edimax-AC600-Wireless-Dual-Band-Mini-USB-Adapter/32106870

NOT WITHSTANDING , wrong card in PC, even 2.4GHz only card,  there are vast ways to fail. 5Ghz.

Down under.

no distance from PC to router stated,  5GHz is not going to go through walls easy, that is a fact, !

the denser the walls there, the worst it gets. and slower or dead.

New Zealand has its  own FCC there that regulates both bands, for sure 5GHZ

use the wiki here, learn that this complex in 1 click,  see those amazing restrictions?

https://en.wikipedia.org/wiki/List_of_WLAN_channels

that means do not buy parts from USA or Asia (west ) that use other frequencies or inf act have some channels dead or illegal in New Zealand. 

let me be clear.  use only Legit New Zealand WIFI devices. (see your list see all the "NO"s there?)

then

in the router , in the 5GHz page make sure AUTO is turned on, OK<  this will help it skip channels

that are illegal in New Zealand (think like this, your country may use channels here for military or other vast resaons) that is why they have their OWN country WIFI GROUP and for sure is not ours.

also the letters on the end of 801.11xxxxxxxxx must be right. what do you have on both ends.

what FCC (N.Zealand) certification stamps are on your WIFI card and on the router (IDK)

5 GHz (802.11a/h/j/n/ac/ax)??????????????

there are 2 classes of 5 GHZ routers,.  ones that fail over to 5 when 2.4 fails and those that run both at same time (far better)

where did you buy your PC or wifi card and where  router (I hope not EBAY , getting wrong parts is fail)

Sometimes the 5ghz channel selected by the router may not be compatible with the 5ghz transceiver in the PC.  Try changing channels on the router to something else and see if it helps.

what is in any old PC who knows.?

even dell does CTO, configured to order.

or changed out later by other or you and forgot, we do is :

why not look first:

wifi cards are complex for sure 5Ghz band. buying non N.Zealand cards would be very problematic.

not only that but not just channels restricted by power restricted, and 5GHz for sure be dead through walls more so if power restricted.

open case look inside,  gander at the wifi card ,get all data off that sticker and google it.

then see what it is, and see what country it is FOR. (looking matters, for sure here)

here is my yankee  router (extended wired access point AP)

Settings matter

and DISTANCE< on 5GHZ stinks,

learn to use INSSIDER.exe (free) say on any laptop with 5GHz , then walk about in the home?

see 5Ghz gets weak and slower so easy with distance and walls, (BINGO it is that is how RF works, on higher frequencies)

5GHz is great if it added to the mix.  but by itself not so good at all, learn this with INSIDDER.exe.

but if the PC is in the same room a the router well that be different and NOT STATED at all.

>> Windows 8 and 10 this is plug and play.

>> https://www.walmart.com/ip/Edimax-AC600-Wireless-Dual-Band-Mini-USB-Adapter/32106870

You know I think you're right - I could spend 12 years trying to get this to work, or just buy a $12 adapter. Heck, where it is I could upgrade the switch with more ports and just wire it in.

>> 5GHz is not going to go through walls easy, that is a fact

This is a good point - although in my instance, it's about ~1.5m from the hotspot, with LoS, so I don't think it's a signalling issue.

>> Was yours shipped with the Wireless N/ac adapter card?

Apparently so. It's got the 8260 multichannel card onboard. The drivers install, and claim to have 2.4GHz and 5GHz settings (with things like prefer-5ghz as an option [which does nothing]). If the 8260 is a card with both 2.4 and 2.5/5g options, that would be problematic The build note says it has this in it:

I infer from that it's supposed to be dual band