USB interface to Audio Card (DAC)https://devzone.nordicsemi.com/f/nordic-q-a/117492/usb-interface-to-audio-card-dacHello, I don&#39;t have experience in audio converters and interfaces so I&#39;m asking here for your advises. What I&#39;ve is a device, in development process, that have a small speaker to provide basic info to user, not music or high definition audio. Thereen-USTelligent Community 13Mon, 23 Dec 2024 11:44:38 GMTRE: USB interface to Audio Card (DAC)https://devzone.nordicsemi.com/thread/516104?ContentTypeID=1Mon, 23 Dec 2024 11:44:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:294678af-360d-41f1-b61d-f3eab96bf5deCharlie<p>Hi Yaro,</p> <div class="flex-shrink-0 flex flex-col relative items-end"> <div> <div class="pt-0"> <div class="gizmo-bot-avatar flex h-8 w-8 items-center justify-center overflow-hidden rounded-full"> <div class="relative p-1 rounded-sm flex items-center justify-center bg-token-main-surface-primary text-token-text-primary h-8 w-8"><strong>The simple answer is that the nRF52840 USB cannot operate as a host.</strong><br />For more details, you can refer to the discussion here:<a href="https://devzone.nordicsemi.com/f/nordic-q-a/36704/what-should-i-do-to-make-nrf52840-to-be-a-usb-host"> <span>What</span><span> should</span><span> I</span><span> do</span><span> to</span><span> make</span><span> nRF52840</span><span> to</span><span> be</span><span> a</span><span> USB</span><span> host</span><span>? - Nordic</span><span> Q</span><span>&amp;A</span><span> - Nordic</span><span> DevZone</span></a>.</div> </div> </div> </div> </div> <div class="group/conversation-turn relative flex w-full min-w-0 flex-col agent-turn"> <div class="flex-col gap-1 md:gap-3"> <div class="flex max-w-full flex-col flex-grow"> <div dir="auto" data-message-author-role="assistant" data-message-id="249a04db-6c04-4a6f-9591-bded55afbbab" data-message-model-slug="gpt-4o"> <div> <div class="markdown prose w-full break-words dark:prose-invert dark"> <p>From my experience with USB DAC devices designed for mobile phones, these typically require driver support on the host side (e.g., the mobile phone). Unfortunately, we do not have expertise or existing solutions for such use cases involving USB host chips.</p> <p>Best regards,</p> </div> </div> </div> </div> </div> </div> <p>Charlie</p><div style="clear:both;"></div>