Why are my USB peripherals disconnecting from some products upon high power draw? - StarTech.com IT Pro Community
<main> <article class="userContent"> <p>The products listed at the bottom of this article feature Overcurrent Protection on the downstream USB ports and the device may cut power to peripherals connected to the ports if they exceed the maximum allotted current. The USB ports support the respective rated current in Table A below, however the overall device power output is limited by the host or (if included) power connection.</p><div class="embedExternal embedImage display-large float-none"> <div class="embedExternal-content"> <a class="embedImage-link" href="https://community.startech.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fus.v-cdn.net%2F6035386%2Fuploads%2FMAPL1I8GT17F%2Fimage.png" rel="nofollow noreferrer noopener ugc" target="_blank"> <img class="embedImage-img" src="https://us.v-cdn.net/6035386/uploads/MAPL1I8GT17F/image.png" alt="image.png" height="228" width="558" loading="lazy" data-display-size="large" data-float="none" srcset="https://us.v-cdn.net/cdn-cgi/image/fit=scale-down,width=10/https://us.v-cdn.net/6035386/uploads/MAPL1I8GT17F/image.png 10w, https://us.v-cdn.net/cdn-cgi/image/fit=scale-down,width=300/https://us.v-cdn.net/6035386/uploads/MAPL1I8GT17F/image.png 300w, https://us.v-cdn.net/cdn-cgi/image/fit=scale-down,width=800/https://us.v-cdn.net/6035386/uploads/MAPL1I8GT17F/image.png 800w, https://us.v-cdn.net/cdn-cgi/image/fit=scale-down,width=1200/https://us.v-cdn.net/6035386/uploads/MAPL1I8GT17F/image.png 1200w, https://us.v-cdn.net/cdn-cgi/image/fit=scale-down,width=1600/https://us.v-cdn.net/6035386/uploads/MAPL1I8GT17F/image.png 1600w, https://us.v-cdn.net/6035386/uploads/MAPL1I8GT17F/image.png"></img></a> </div> </div> <p>If Overcurrent Protection is activated but then the current draw on the downstream device drops back below an acceptable level, the USB device will reconnect. This may result in a continuous connection/disconnection cycle. To stop the cycle, disconnect the device from the product for 15-20 seconds and then reconnect it to a different USB port. If the connection/disconnection cycle occurs again, even when device is connected to a different or higher powered USB port on the product, then the USB device is not compatible with this product.</p><p><br></p><p><em>Relevant SKUs: </em></p><ul><li><em>HB30AM4AB</em></li><li><em>HB30CM3A1CB</em></li><li><em>DKT31CHPDL</em></li><li><em>HB30CM4AB</em></li><li><em>DKT30CHVAUSP</em></li><li><em>DKT31CMDPHPD</em></li><li><em>DKT30CSDHPD3</em></li><li><em>116N-USBC-DOCK</em></li></ul> </article> </main>
