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Questions tagged [usb]

Use this to tag for questions about the USB interface or devices connected via USB.

Universal Serial Bus (USB) is an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply (interfacing) between computers, peripherals and other computers. A broad variety of USB hardware exists, including 14 different connector types, of which USB-C is the most recent and the only one not currently deprecated.

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List USB devices on OSX command line

Can I List USB devices on OSX - similar to lsusb on Linux. I know I can access from System Information.
Milliways
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What happens if you plug more than one charger in the new MacBook Pro (2016)?

Apple's controversial decision to convert all the ports on their 2016 MacBook Pro lineup to USB-C ports contributes to blur the difference between ports that supply power (such as a power adapters) and ports that can power external devices (such as…
MicroMachine
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How to stop OS X from writing Spotlight and Trash files to memory cards and USB sticks?

When plugging a USB stick into a Mac, OS X creates a number of hidden files on the stick, including a Spotlight index and Trash folder. Example from the terminal for a USB stick "Untitled": $ ls -a…
j-g-faustus
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Creating A Bootable USB Of Windows 8.1 On OS X?

Reasons for wanting create such a usb include: PC is unbootable and you want to prepare a bootable USB using the ISO file that you have on your external hard drive. to install Windows 8.1 on Mac without Boot Camp. What are the necessary steps to…
Simon
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Using Terminal, how can I find which directory is my USB drive mounted in?

I am using Terminal and have looked through directories. I just can't find where my USB drive its directory is. Which directory is my USB drive mounted in?
LiJung
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Copying ISO file to USB drive in OS X?

I have tried to copy an ISO file to a USB drive. I am unable to do it with Disk Utility. How can I copy the ISO file to a USB drive? But I get the below. I have enough space in the 16GB USB drive for the 2GB ISO file. What am I doing…
hhh
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Internal keyboard and trackpad stop working after plugging in USB device

I got a new MacBook Pro with OS X Mavericks. When connecting my phone via USB, the internal keyboard and the trackpad immediately stop working -- not always but in most cases. The bluetooth mouse and an external USB keyboard are not affected.…
Patrick
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How do I disable this message: "the disk was not ejected properly"?

Is there any way to disable the "the disk was not ejected properly" message? I use a KVM and need to switch between two systems and have a memory stick that is in the KVM. The problem is that it's very annoying to get the message every time I switch…
Sindre Sorhus
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Suddenly Apple Wired Keyboard not working

Suddenly my wired Apple Keyboard isn't working anymore. My MacBook don't recognize the external keyboard, and the keyboard is only two weeks old. Is the Keyboard physically broken, or is it a software issue? What can I do to fix it?
xyNNN
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Formatting USB Disk As EXT3 On Mac

How can I format a USB disk as ext3 using OS X Yosemite? I want to use it on another system that is linux based but I wish to format it first before connecting to the linux system.
motionpotion
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Is the Macbook 12 inch's USB-C charger interchangeable with other USB-C chargers or devices?

If there is only the Macbook 12 inch USB-C charger nearby, can it be used to charge other USB-C devices, such as any Android phones that also use USB-C? (will it be "too powerful" and damage other devices?) Vice versa, if there is a Quick Charge 2.0…
nonopolarity
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Emptying trash of the USB drive

I have a USB drive plugged into my Mac. What I found was .Trashes was not emptied when the emptying trash (right click the Trash icon and run "Empty Trash") for the USB drive What might be wrong? Is there any other way to empty trash the USB drive?
prosseek
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USB-C dongles killing Wi-Fi on 2016/2017 MacBooks – Who’s to blame?

I recently switched from my beloved MacBook Pro Retina (Late 2013) i5 2.6/16/512 to MacBook Pro (2017) Non-TB i5 2.3/16/512. I purchased what from the build-quality looked like a good USB-C-to-DisplayPort cable with 4k/60Hz support, just to run into…
Dr. Woo
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Force Sidecar to use usb connection

macOS Catalina has a feature where you can use your iPad as a secondary display for your Mac. I have a Macbook Pro 2016 and a 10.5 inch iPad Pro 2017. Both are officially supported for the latest versions of macOS and iPadOS and support Sidecar. I…
Vahid Amiri
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iPhone 7 won't charge from my MacBook Pro

My iPhone 7 which I recently bought doesn't charge with my MacBook Pro Retina 2015. It always shows for one second that it recharges but then something like lost connection and then again. and goes on and on, both ports... Strange thing is that my…
Dominik Bucher
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