Usb Not Working Macbook Air

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Usb Not Working Macbook Air

Usb Port Not Working Macbook Air
Usb Not Working Macbook Air
Usb Port Not Working On Macbook Air
Usb Ports Not Working On Macbook Air
Try disconnecting everything (mouse, mobile devices, etc.) to see if that helps fix the problem. Hard restart your MacBook: Hold down the Power button for at least 10 seconds. Your Mac or MacBook may not be supplying enough power to adequately service all of the devices. The solution here is to try connecting the flash drive directly to the computer's USB port or employing a self-powered hub that eliminates the power drain on your machine. 3 Failure to Previously Eject a Drive. 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. Failure to eject a USB drive.
SymptomsSymptoms such as these could mean that a device connected to the USB-A , USB-C , or Thunderbolt 3 (USB-C) port on your Mac isn't getting enough power:
A message says that the device needs more power, the operation can't be completed, or USB devices are disabled until you unplug the device using too much power.
An operation that requires more power doesn't work. For example, writing to disk requires more power than reading from it.
The device doesn't turn on or isn't recognized by your Mac.

SolutionsUse your device as a self-powered device or connect it to a powered USB or Thunderbolt 3 (USB-C) hub if possible.
Self-powered devices get power from an electrical outlet or their own battery. Bus-powered devices get power from the device they're plugged into, such as your Mac.
Reduce the total amount of power needed from your Mac by reducing the number of bus-powered devices connected to your Mac, or using more of them as self-powered devices.
If your device is plugged into another device (such as a display or multiport adapter) as part of a chain of devices, the other device might not be providing enough power or passing through enough power from your Mac. Plug your device directly into your Mac instead.
Make sure that the port on your Mac and the cable you're using to connect it to your device both support the same or later USB specification as your device. For example, a device designed to support the USB 3 specification might not get enough power when plugged into a USB 2 port or cable.
Try a different cable, in case the cable that you're using is damaged or defective. If you're using an adapter with your cable, the adapter could also be damaged or defective.
If your Mac has multiple Thunderbolt 3 ports, connect your device to a Thunderbolt 3 port farthest away from the current port. For example, if your device is connected to the ports on the left side of MacBook Pro, connect to the Thunderbolt 3 ports on the right side. 
If your device has software (such as drivers or firmware) that can be updated, make sure that it's using the latest software from the manufacturer. To get firmware updates for Apple accessories, update your Apple software.
Make sure that your Mac is awake and started up from the Mac operating system. Some Apple devices can request extra power only when your Mac is awake or started up from macOS.
Learn more about USB power on your MacSystem Information provides additional detail about USB power on your Mac. Connect the USB device directly to your Mac, then select USB from the sidebar in System Information. For each USB device, System Information shows:
Current Available: The default power provided by the port to which your device is connected.
Current Required: The power needed by your device.
Extra Operating Current: Mac computers and Apple displays introduced after 2006, when directly connected to certain Apple devices such as iPhone or iPad, can provide extra power over one or more ports. The Mac or display must be powered on and awake to provide this extra power. A Mac started from the Windows operating system doesn't provide extra power.
Learn more about the power available under each USB specification, such as USB 2 and USB 3.
This article explains how you can fix when your Apple USB keyboard isn't working as expected. If you see an error message, your keyboard keys suddenly stop working, your Mac is no longer recognizing your USB keyboard and you can't figure out why; this article will help you fix your problem.
This is an important problem because you will not be able to use your Mac without a keyboard. Your keyboard is the main mode of input.
See also: Keyboard double space problem.
USB Keyboard fixes:After each step please test to see if your keyboard is working:
1. Restart your Mac. It is simple but effective. Restarting your Mac may fix your issue. To restart your Mac, click the Apple menu > Restart.
2. Check your keyboard batteries if applicable. Some USB keyboards have batteries. Open the battery part of the keyboard and check to see if the batteries are placed correctly. Also, try replacing the batteries.
3. Check the USB connections. It is possible that your Keyboard is not properly connected to your computer. Try the following tips:
Switch the keyboard's cable to another USB port on the same Mac, if possible.
Unplug your keyboard and replug it into your Mac firmly and securely.
Ensure that there is not anything (debris, dirt, etc) obstructing the connection in the USB port. If there is, try to remove it.
Disconnect all connected devices from your Mac. These can be a mouse, keyboard, printer, etc. Now reconnect your keyboard and mouse back into your computer. If you can use your Keyboard now the problem may be with one of the other devices. What you can do is to try replugging them one by one until you find the device that is causing the problem.
4. Reset the SMC of your Mac. Your USB port may be having a power-related problem and resetting the system management controller (SMC) can fix your problem with your keyboard.
It is highly likely that this is a desktop computer. If it is, resetting the SMC is very simple. Follow the steps below:Shut down your Mac by choosing Shut Down from the Apple menu.
Unplug it from the power outlet.
Wait about 15 seconds.
Now replug it into the power outlet.
Wait another 5 seconds.
Now start up your Mac by pressing the power button.
If this is a Mac Notebook, the steps are a little different. We previously wrote about this topic. Please see that article on how you can reset the SMC.
5. Reset NVRAM or PRAM on your Mac. This is really easy. Here is how:

SolutionsUse your device as a self-powered device or connect it to a powered USB or Thunderbolt 3 (USB-C) hub if possible.
Self-powered devices get power from an electrical outlet or their own battery. Bus-powered devices get power from the device they're plugged into, such as your Mac.
Reduce the total amount of power needed from your Mac by reducing the number of bus-powered devices connected to your Mac, or using more of them as self-powered devices.
If your device is plugged into another device (such as a display or multiport adapter) as part of a chain of devices, the other device might not be providing enough power or passing through enough power from your Mac. Plug your device directly into your Mac instead.
Make sure that the port on your Mac and the cable you're using to connect it to your device both support the same or later USB specification as your device. For example, a device designed to support the USB 3 specification might not get enough power when plugged into a USB 2 port or cable.
Try a different cable, in case the cable that you're using is damaged or defective. If you're using an adapter with your cable, the adapter could also be damaged or defective.
If your Mac has multiple Thunderbolt 3 ports, connect your device to a Thunderbolt 3 port farthest away from the current port. For example, if your device is connected to the ports on the left side of MacBook Pro, connect to the Thunderbolt 3 ports on the right side. 
If your device has software (such as drivers or firmware) that can be updated, make sure that it's using the latest software from the manufacturer. To get firmware updates for Apple accessories, update your Apple software.
Make sure that your Mac is awake and started up from the Mac operating system. Some Apple devices can request extra power only when your Mac is awake or started up from macOS.
Learn more about USB power on your MacSystem Information provides additional detail about USB power on your Mac. Connect the USB device directly to your Mac, then select USB from the sidebar in System Information. For each USB device, System Information shows:
Current Available: The default power provided by the port to which your device is connected.
Current Required: The power needed by your device.
Extra Operating Current: Mac computers and Apple displays introduced after 2006, when directly connected to certain Apple devices such as iPhone or iPad, can provide extra power over one or more ports. The Mac or display must be powered on and awake to provide this extra power. A Mac started from the Windows operating system doesn't provide extra power.
Learn more about the power available under each USB specification, such as USB 2 and USB 3.
This article explains how you can fix when your Apple USB keyboard isn't working as expected. If you see an error message, your keyboard keys suddenly stop working, your Mac is no longer recognizing your USB keyboard and you can't figure out why; this article will help you fix your problem.
This is an important problem because you will not be able to use your Mac without a keyboard. Your keyboard is the main mode of input.
See also: Keyboard double space problem.
USB Keyboard fixes:After each step please test to see if your keyboard is working:
1. Restart your Mac. It is simple but effective. Restarting your Mac may fix your issue. To restart your Mac, click the Apple menu > Restart.
2. Check your keyboard batteries if applicable. Some USB keyboards have batteries. Open the battery part of the keyboard and check to see if the batteries are placed correctly. Also, try replacing the batteries.
3. Check the USB connections. It is possible that your Keyboard is not properly connected to your computer. Try the following tips:
Switch the keyboard's cable to another USB port on the same Mac, if possible.
Unplug your keyboard and replug it into your Mac firmly and securely.
Ensure that there is not anything (debris, dirt, etc) obstructing the connection in the USB port. If there is, try to remove it.
Disconnect all connected devices from your Mac. These can be a mouse, keyboard, printer, etc. Now reconnect your keyboard and mouse back into your computer. If you can use your Keyboard now the problem may be with one of the other devices. What you can do is to try replugging them one by one until you find the device that is causing the problem.
4. Reset the SMC of your Mac. Your USB port may be having a power-related problem and resetting the system management controller (SMC) can fix your problem with your keyboard.
It is highly likely that this is a desktop computer. If it is, resetting the SMC is very simple. Follow the steps below:Shut down your Mac by choosing Shut Down from the Apple menu.
Unplug it from the power outlet.
Wait about 15 seconds.
Now replug it into the power outlet.
Wait another 5 seconds.
Now start up your Mac by pressing the power button.
If this is a Mac Notebook, the steps are a little different. We previously wrote about this topic. Please see that article on how you can reset the SMC.
5. Reset NVRAM or PRAM on your Mac. This is really easy. Here is how:
Turn off your Mac.
Turn on your Mac and quickly press Option, Command, P, and R keys together.
Keep holding the keys for about 20 seconds.
Then release the keys. Your Mac will restart.
Usb Port Not Working Macbook Air6. Update your Mac. Update the software on your Mac. Here is how:
If your current macOS version is Mojave or later (e.g., Catalina): On your Mac, go to Apple menu > System Preferences > Software Update. This will check for updates. If there is an update available, click the Update Now button.
Other macOS versions: Launch the App Store on your Mac and click Updates.
7. Boot into Safe Mode. Restart your Mac in Safe Mode. Here is how:
Turn off your Mac.
Turn on your Mac and quickly press and hold the Shift key.
Keep holding the Shift key until you see the login screen. Safe Mode can take up to 10 minutes so be patient.
When your computer is in Safe Mode, test your keyboard, is it working now?
In any case, restart your Mac normally. Do not press the Shift key.
When your computer restarts, test your keyboard again. Did Safe Mode fix it?
Usb Not Working Macbook Air8. Delete preference files. Your preference file may be corrupt and deleting it may resolve your issue. Here is how:
Usb Port Not Working On Macbook AirOpen the Library folder. You can open this folder by following the steps below:On your Mac, click the Finder icon in the Dock.
In the Finder, click Go.
Hold down the Option key and you will see the Library folder in the Go dropdown menu. Click it to open.
Click Preferences.
Find the 'com.apple.HIToolbox.plist' file. This is the Human Interface Toolbox settings file. The file stores keyboard default settings.
Delete this file.
Restart your Mac.
Does your keyboard work now?
Usb Ports Not Working On Macbook AirUltimaker cura software 32 bit. If you are still unable to use your USB keyboard, you may want to contact its manufacturer for support.