Press the Power button while holding all three keys.How this is done depends on whether you’re using a MacBook or a Mac desktop. Resetting the SMC (System Management Controller) is a simple fix that cures a wide range of hardware issues. Here are three things to try, starting with the most common fix. It’s unlikely that all of your ports would fail at once, which means the fix is probably an easy one. What to do if Mac USB devices are not workingĪll of your Mac or MacBook USBs not working is actually better news than one failing. If the device doesn’t work in any of your ports, continue reading for some potential fixes. If this is the case, the only real solution is to contact an authorized Mac specialist for a hardware diagnostics test and have the port repaired. If the devices aren’t working on one or all ports, it’s more likely to be an issue with your Mac and not the device.Ī USB device that works on one port but not another is a sign of a faulty port. If there is no apparent damage, take two different USB devices and test them against different ports. Inspect the device visually, looking for damage to the connector and any signs of frayed wiring.

There’s a chance that it could have failed, particularly so if you’re using a cheaper cable. You’ll be surprised at how many problems a quick restart solves. But to help you do it all by yourself, we’ve gathered our best ideas and solutions below.įeatures described in this article refer to the MacPaw site version of CleanMyMac X.īefore we get into the software fixes, let’s start with the simplest solution of all - restarting your Mac. So here’s a tip for you: Download CleanMyMac to quickly solve some of the issues mentioned in this article.

Usb c to hdmi not working mac