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Blash682
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Elite X2 1012 G2 WWAN connection

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HP Elite X2 1012 G2
Microsoft Windows 10 (64-bit)

Greetings.

I recently bought a used Elite X2 1012 G2 with a HS3210 WWAN card.

Since I wanted to upgrade to an LTE one, I bought an HP LT4120, that is listed as compatible on the notebook manual.

Well, on that WWAN card, the AUX and MAIN antenna connectors are reversed! Hence, I can't connect the two cables (5 for MAIN and 6 for AUX) because I would have to reverse them, and the "6" cable is too short!

 

How is this even possible considering the HP LT4120 is listed as compatible in the manual?

How can I solve?

Thanks in advance.

 

InkedIMG_20210114_205900431_LI.jpg

 

 

5 REPLIES 5
Paul_Tikkanen
Level 21
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Message 2 of 6
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Hi:

 

I don't see how you can fix the problem.  Every HP LT4120 module I could find has the terminals arranged like yours.

 

if the card works fine with the antenna wires attached the opposite way, I wouldn't be concerned.

 

 

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Blash682
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The WWAN connection works, but to be honest it isn't super fast. 

What I cannot tell is wether it is working worse than intended due to the reversal.

Anyone has a clue?

 

In the meanwhile, thank you for your answer, Paul!

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Paul_Tikkanen
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You're very welcome.

 

I noticed in your screenshot that you didn't have the left antenna wire connected.

 

Hopefully you connected it after you took the picture.

 

Unless you re-route the antenna wire (if you even can), I don't see what options you have.

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Blash682
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Message 5 of 6
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I know, I temporarily placed the card there just to take the picture (in fact they're both disconnected).

I tested it with everything connected as it should. 

Anyway, as you correctly pointed out, rerouting isn't possible, the wire simply isn't long enough.

 

But I can't stop thinking that there must be a reason if an antenna is marked as main and the other as aux.. 

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Paul_Tikkanen
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I agree with you.

 

But anything I can find, no one can specifically explain the difference, such as this...

 

A couple of questions about laptop internal WiFi antennas. : techsupport (reddit.com)

 

There have been a couple of times where I have found that switching the antenna wires provided better reception than having them connected as designed.

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