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PH517-51 may not detect external speakers or headphones - Acer Community
<main> <article class="userContent"> <h3 data-id="this-article-only-applies-to%3A-predator-helios-500-(ph517-51)">This article only applies to: Predator Helios 500 (PH517-51)</h3><p>Acer has posted a new audio driver to address a detection issue with the PH517-51 headphone audio jack. Use the instructions below to download and install the latest Realtek audio driver to resolve this issue.</p><ol><li>Visit the <a href="http://us.acer.com/ac/en/US/content/drivers" rel="nofollow noreferrer ugc">Drivers and Manuals section</a> of the Acer support website.</li><li>Enter your <strong>Serial Number/SNID</strong> or search for your product by Model.</li><li>Select Driver.</li><li>Click the Download link for the file you want to download (Realtek driver 6.0.1.8485 or later).</li></ol> </article> </main>