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I am planning to upgrade the WiFi card in my 1st gen Zenbook UX31E from N to AC.

What is the name of the size of my Mini PCI-Express card?

The card

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Its a Mini PCI-Express module. Asus is suggesting basically the same part. – Ramhound Sep 4 '13 at 15:45
Your statement makes no sense. If the item installed in your hardware is a Mini PCI-Express product, then you can replace it, with a Mini PCI-Express product supported by the hardware. The replacement part has a generic item image. The Asus replacement part has no information to determine if it is indeed a Mini PCI-Express card – Ramhound Sep 4 '13 at 15:52
I would almost guarantee the other screw is simply hidden. Mini PCI-Express is a standard, there form factor is well defined, only ASUS can provided the require information about the replacement part. – Ramhound Sep 4 '13 at 16:15
@JoshR - A non-standard PCIe card != mini PCIe card – Ramhound Sep 4 '13 at 16:51
You are correct. @Ramhound I should not have said a non-standard connector, more a non-standard form factor. – Josh Sep 4 '13 at 17:16

Half Mini PCI-E card made by AzureWave (AW-NB086) Qualcomm AR9485WB-EG. It has MHF4 Female connectors so you need an adapter with that on one end and U.FL connectors on the other (found a few on Ebay coming from China).

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up vote -1 down vote accepted

It does not have a name. The card is custom made for the UX31.

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