Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Can we upgrade the OS to Win8 or Win8 pro etc? Will the hardware support? I suppose Yes, but if some one know could clarify?
Document: Comes with Home edition, so I had to upgrade to get onto office domain. Bad idea. Some drivers don't work, so unless you are happy to use Home Edition, don't buy this.Also, the support is *terrible*. It was like pulling teeth to get a straight answer, and once I got to a supervisor and told him I would need to return it if it couldn't be resolved, he spouted off some crap about "I could control that in Windows Control Panel."
And also the backlit keyboard is nice on the Mac, Zenbook's keyboard is not backlit.And regarding performance, I really find it dumb to compare the two because one uses Windows and the other OS X, we all know that apple lovers say the OS is much better, it doesn't have any viruses and blah, blah.
I won't harp on the appearance of the materials, font's used, etc. Yes the weight may be different then Asus has advertised, there are alot of variants of the machines in each form factor (ux21 or ux31) and this may explain the discrepancy in the specs. Either way the design is impressive and it is a stunning notebook.Other reviewers have been accurate regarding the poor performance of the atheros 9485 wireless card.
The wifi is horrific. Unfortunately the updated driver errors out when installing so I have no idea if they would improve performance but out of the box it drops connections endlessly.3. Can't handle Windows Professional. Don't even think of trying an Anytime Upgrade if you need Windows Pro. That action brought my machine to a crawl where the only option was to initiate a factory restore.4. The Factory Restore took almost 2 hours.
I still upgraded to bios 2.09, which is the latest available from Asus. I guess I should mention that my Zenbook has the Elantech trackpad, don't know if the Sentelic would be any different.I had previously donwloaded all drivers and apps from Asus site because I was going to perform a clean install anyway, so I did. I had to do a clean install because I needed the OS in spanish, and I prefer to install the apps I need the way I like them.
Your fingers have to be so perfectly spaced from the trackpad and the keys have to be so perfectly pushed that it's virtually impossible to type a paragraph or two without having to go back and correct the missing letters or bring your cursor back to where it's supposed to be. The trackpad is extremely sensitive and I've found myself moving things without even realizing it, finding directories in explorer that were somewhere else before I ventured into the program. I don't suppose there is any software fix for this but maybe a hardware.
Ok, this touchpad is a spawn of the devil. From day 1 after buying this laptop in August 2012 this touchpad hasn't functioned correctly. After I installed the latest touchpad driver things got better but yesterday the touchpad died and refuses to work even after uninstalling, reinstalling the latest driver. It's apparently now a hardware issue and I'll have to track down the warranty. Why didn't I buy a Mac Airbook?! ?So, I just tried submitting a repair request at the Asus support site.
All you need to do is fill out the form online and let support know that you have an ADP number to authorize additional repairs. That's exactly what I did and was told my machine would be fixed free of charge, extending even to the damage that I wasn't requesting a repair for. That's nothing short of amazing.
That's where my case stands. I'll post an update to let Amazon customers know what transpired.Lessons: Generally speaking, it's becoming impossible not to include support as part of the purchase decision, because it's gone downhill for most brands. And that makes Apple the absolute king of the hill, with PC brands trailing woefully.
updated on Aug 31,2012After I went to Asus support site and download their most update touchpad driver, the keyboard issue is gone, so I update my review of this product from 4 stars to 5 stars. Also, I found an almost half price for this "like-new" item on Amazon.item. verything is still wrapped well like new, no scratches or anything. You could think it is a brand new if you don't see the refurbished stickers on the bottom.
Answer: If Win8 is desired, then I would tell you to buy the newer model with Win 8 already installed.