Causes and how to fix Macbook not recognizing USB

MacBook is one of the most popular high-end computer lines at the moment. However, computer users sometimes encounter the situation where MacBook does not recognize USB. What is the cause of MacBook not recognizing USB? Is there any way to handle this situation?

Reasons why Macbook does not recognize USB

Determine the error due to Cable – USB or MacBook

You need to know that, to connect to the USB port of MacBook, you need to use a converter cable. Therefore, to fix the error of MacBook not recognizing USB port quickly, you need to determine where the damage is. Common damages such as:

1. MacBook USB boot connection problem: Check if the cable is plugged into the correct USB port and is working. 
2. Faulty or damaged connection cable: Remove the cable to check if there is any problem.
3. Check USB device: Try plugging the USB into another MacBook device. If it connects to another computer, it means your computer is faulty and vice versa.

Other causes

Some other reasons why Macbook does not recognize USB are:

1. MacBooks and USBs do not use the same file organization system.
2. The USB slot on the MacBook is covered with dust.
3. Security software has problems, blocking USB connection.
4. Mac OS crashed.
5. The USB slot has a broken connection wire.

How to quickly fix the error when MacBook does not recognize USB port

The first thing is to clarify the cause of the MacBook not recognizing USB. Is it an error from the USB device or a problem in the computer's installation system? Then, refer to the following solutions.

Reset SMC

This method is quite popular, because almost all popular MacBook Pro, MacBook Air. models can be applied. Follow these steps to reset SMC: 

Step 1: Turn off the computer completely
. Step 2: Connect the MacBook to the power charger.
Step 3: Press and hold the Shift + Control + Option + Power keys at the same time for a few seconds. Until the signal light on the power adapter flashes or changes color, it means the SMC reset was successful.

Reset PRAM/NVRAM

Hold down all the keys: Cmd, Option (Alt), P and R at the same time and turn on your Macbook. Hold them until you hear your Macbook restart.

Your Macbook should then boot normally. You should check to see if that fixes the problem with the USB port.

Convert compatibility between USB and MacBook

Most common USB devices are compatible with Windows operating systems. Such USBs are set up to use the NTFS file system.

Meanwhile, the MacBook line of computers is designed to use the NTFS file system. For this reason, trying to create a connection between the two systems leads to the MacBook not recognizing the USB.

To handle this situation, users can seek the support of some file system conversion software to create compatibility between the two devices. You can use the popular Command.

Using a new USB device

Check if the problem is with the USB device you are using by plugging another USB into the MacBook's port. If it works, then your old USB device is the problem. 

You need to replace the USB device to continue using it. When choosing a USB, pay attention to compatibility with your MacBook line.

Clean the slot

MacBook not recognizing USB may be due to dust in the slot. This affects the contact between the cable and USB. 

Use a soft brush or cotton to clean the slot area. Then, repeat the USB plugging operation about 3-6 times to increase the device's contact ability.

Update software for computer

You need to keep your core software and OS X software up to date. Installing software on your computer reduces the likelihood of system errors.

Select App Store and click Updates to install. Be sure to back up important information and data before performing a system update for your MacBook. 

Notes when using Macbook

Take good care of your device to avoid damage during use. With Macbook, you should note the following:

1. Avoid using Macbook with high intensity, should let the machine rest when using a lot. Because when Macbook has high temperature, it is easy to make USB slots hot and its lifespan will be reduced.
2. Regularly clean the outside of your Macbook. You should bring your Macbook to a specialist repair shop to have it cleaned from the inside.
3. Disconnect peripherals when not in use to both protect your Macbook and protect the peripherals from damage.

Conclude

MacBook not recognizing USB can be handled with the simple methods above. Hopefully with this article, the above problem will no longer be a problem for you! If you cannot handle the situation of MacBook not recognizing USB at home, you can contact TipsMake via hotline 19001903 to receive the best service.

Micah Soto

Update 16 January 2025