Usb port not recognized mac


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As USB ports are used for a wide range of devices, an inactive port can become a major problem. First, ensure the problem is with the Mac USB ports - the easiest way is to try a few separate devices using the same connections. Also, ensure that cables are in good working condition with no damaged, burnt spots.

This is a common problem, and not model specific. Although this may seem to be a hardware issue, a number of possible solutions are available without replacing the port or performing a fresh installation of mac OS. Firstly, you can try to reset a number of built-in controllers with the methods outlined below.

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If you are sure that the devices connected via USB are working properly, the ports are clean and connection is secure, you can try to reset the System Management Controller SMC. Next, hold down a combination of the Shift, Control, Option, and Power keys for a few seconds and observe the power adapter light. When it blinks or changes color, release the key combination. Finally, boot the computer in the usual way by clicking the power button. Test each one individually. Resetting these might solve USB problems. When the computer starts booting, hold down the combination of Command, Option, P, and R keys.

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Keep holding the combination until you hear the startup chime additionally, the screen might flash. Release the buttons and let the system boot as usual.


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Once the computer has loaded completely, the USB ports should be working. Test each port with a number of separate devices. Under normal circumstances, you will have immediate access to the device and the data it contains. Unfortunately, circumstances are not always normal when dealing with computers and storage devices.

How to Fix USB Drive Not Recognized On Mac?

You might be ready to view some photos your friend sent you on a flash drive when you discover that the USB drive is not showing up on your Mac. Hopefully, you are not subjected to this issue very often, but if you do experience problems when attempting to view a USB drive there are some potential remedies that you can try.

Some of these fixes are very simple while others may involve performing data recovery on a corrupted or damaged drive. Before trying any of these options, if it is not too much trouble, try restarting your Mac. It is often the most efficient way to deal with the occasional hardware glitch that arises from time to time. The first thing to check if your thumb drive is not showing up on a Mac is if the problem is with the particular USB port that you are using. At the risk of stating the obvious, your first move should be to try the device in an alternate USB port available on your machine.

If the device works in the second port it indicates that the first port may be damaged and may need to be replaced or repaired.

Why Is My USB Flash Drive Not Showing Up on Mac? [Solved]

If another Mac is available , try connecting the flash drive to it in order to verify that the USB drive itself is not the culprit. If it will not work on different Macs then it is likely that there is a major issue with the device. Your flash drive may not be registering with your Mac due to an issue of insufficient power. This is especially prone to happen if you use a bus-powered USB hub and have multiple devices connected simultaneously.

Stay Informed

Your Mac or MacBook may not be supplying enough power to adequately service all of the devices. If your Mac is having problems identifying a flash drive it may be that you did not properly eject a drive that was previously connected to your machine. Checking for updates may be one of the easiest ways to open USB ports on your Mac.

Firmware updates address a variety of hardware issues and the functionality of the USB ports could well be one of them. Keeping your software and firmware up to date is good practice even if you are not experiencing problems. It is an essential step in resolving issues when they arise.

What to do if Mac USB devices are not working

Your system configuration might need to be reset in order to resolve the USB port problem. It may be that the reason you cannot access the data on the flash drive is due to data corruption. Using data recovery software you can attempt to restore the data if you can get the system to recognize the drive so the recovery software can work on it.

Disk Drill data recovery software is an excellent solution that gives you a great chance of recovering your files from a damaged or corrupted drive.

In order to recover data from a flash drive or other USB connected drive using Disk Drill, follow these steps:. Disk Drill can be a lifesaver in situations where you cannot access files due to disk corruption or damage.