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crwdns2944351:0crwdnd2944351:0HP EliteBook 840 G9 WWAN Module Replacementcrwdnd2944351:0crwdne2944351:0

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Introduction
Use this guide to replace the WWAN module (aka cellular card) in your HP EliteBook 840 G9 laptop.
You may need to replace the WWAN module if your laptop cannot connect to cellular networks, frequently loses signal, experiences slow mobile data speeds, or fails to recognize the SIM card.
Still under warranty? [link|https://support.hp.com/us-en/check-warranty|Contact HP] to learn your warranty status, receive a repair under warranty if eligible, or for further warranty information.