Questions tagged [usb]

Devices that use the Universal Serial Bus data interface

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13 views

How to disable sidetone (voice feedback) on USB headset on macOS Catalina?

I have a Plantronics C5220 USB-C headset and when I use it on Skype I can hear myself in the headset speakers, that's what they call "sidetone" (or voice feedback). Apparently there is a native ...
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2017 27" iMac Keyboard Issue

I'm having an odd problem, I have a 2017 27" iMac, it comes with a bluetooth keyboard in the box. However, I swapped it out for a wired keyboard as I prefer Apple's older wired keyboards over the new ...
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mac wont boot anymore after running bootcamp

It went fine until it restarted and showed a black screen with"insert bootable device" which was right there. It wont do anything else until I hold the power button to turn it off. rebooting shows the ...
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Force Quit Disk Utility to Cancel 7 pass Erase and Now Disk is not usable

I accidentally performed a 7 pass erase on my usb drive, and I don't want to wait that long time so I forced quit the Disk Utility. However, after doing that I found out that my disk is kind of ...
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MacBook Pro 2015 (Mojave) to BenQ 270C Monitor

One of the compiling reasons to use the BenQ monitor with my MacBook is that I would be able to have power/video/data delivery from one USB-C cable to my MacBook. The video and power work great, but ...
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32 views

Removable drive not showing up in MacBook

I am using Phone One Plus 6T and connect it to my MacBook to transfer files. Everytime I connected it to my MacBook, I selected the option "File transfer" and it all used to work fine with a USB ...
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32 views

Two external monitors using macOS and Windows on a MacBook Pro 13”

I am in the process of setting up my desktop space and would like some guidance on products to purchase. I am looking to buy two external monitors and a dock that will allow me to use my macOS and ...
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34 views

Booting from MBR USB on Mac

I have a MacBook Pro8,1. For experimental purposes I've installed Windows 7 to USB (it's NOT an installer, a real OS on USB) via WinNTSetup on other PC. When I'm trying to boot from the USB with the ...
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41 views

Creating bootable USB from “Install OS X El Capitan.iso” [duplicate]

I have "Install OS X El Capitan.iso" file. I have burned the image to a DVD and successfully installed El Capitan in the past. Now that my DVD drive is broken, I would like to create a bootable USB ...
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93 views

Detecting theft of data - folder / files transfered from MacBook to USB

I know this is similar to another question posted here a while ago: Did someone copy files from my Mac? but the problem is slightly different and the answers don't help in my case. I need to know ...
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Get historical USB usage using terminal

I need to see historical USB usage on my mac. I've tried system_profiler SPUSBDataType | grep "Serial Number" -B5 but this only shows current. Is there a command that shows historical?
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USB flash drive doesn't remount automatically

I have a USB flash drive connected to a Dell monitor that's connected to my MacBook Pro with a Thunderbolt 3 cable. If I unplug the MacBook (screen closed), then plug it back in, I'm notified I didn't ...
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25 views

Connecting external monitor to MacBook turns both screens black

The screen of my 2019 16-inch MacBook Pro regularly (maybe 1 out of 5 times) turns black when connecting external monitors (which then remain black as well). There are occasional flickers where the ...
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51 views

No sound through USB-C to HDMI adaptor on MacBook Air 2019

MacBook Air, Retina, 13-inch, 2019 Running Catalina 10.15.2 Using USB-C to HDMI adaptors, MacBook Air sound preference center cannot recognize the device it is plugged to (HDMI cable connects the ...
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USB-C port became disabled

For some reason, one of my USB-C ports on my 2017 Macbook Pro 13in became disabled. The power cable going into the USB-C port wasn't charging the machine, and a monitor also plugged into that port ...
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38 views

USB-C keyboard problem

I have a Delux T9X keyboard which has a USB-C port. I tried to connect it to my Macbook Pro with a type-c/type-c cable, but it doesn't works. Then I tried to connect it with a type-c/type-a cable ...
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Refresh USB port / restart usb service

after the upgrade to Catalina I have some problem with the USB hubs. I have three USB hubs (all working fine before the upgrade) that when plugged they are recognised once every 10/15 times. If I plug ...
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Finder shows different folder sizes, and number of items

I am having a strange issue.. I have a Synology server, whose mounts are attached via smb in my Mac. There somewhere I have a folder, which I want to copy paste to another external hard drive, which ...
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41 views

Mac mini 2018 cursor freezes after RAM upgrade

My Mac mini 2018 (3 GHz Core i5) runs Mojave 10.14.6. Monitor is an LG UHD 27UK850. After a RAM upgrade to 32GB the cursor regularly but momentarily freezes approximately every 4 seconds - a major ...
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On Macbook Pro with 2 HDMI monitors, is it possible to associate the USB-C/HDMI with a desktop/monitor?

On Macbook Pro with 2 HDMI monitors via 2 USB-C/HDMI adapters. I have multiple desktop's on each display. The macbook itself always has the same desktops on, but my two HDMI monitors periodically/...
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24 views

Can't boot from USB with new hard drive

I have a MacBook Pro A1278 Mid-2009 13" Core 2 Duo 2.53 and the hard drive is going out. When I put a new HDD in (or no HDD) it will not boot from USB (or CD). When I put the old failing hard drive ...
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How to sync iPhone Voice Memos to the Mac via USB without using iCloud?

I have no interest in iCloud for syncing sizeable data like Voice Memos. It is quickest for me to just connect my iPhone to my Mac via the USB cable and do my syncing that way. Many changes have ...
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1answer
39 views

File transfer between iPhone XR & USB flash drive using lightning cable & female-to-female USB connector?

I know I could get a flash drive with a lightning jack or with both a lightning jack and a USB jack, but is it feasible to transfer files between an iPhone XR running iOS 13.3 and a USB flash drive ...
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My external Kensington USB mouse teleports to the bottom left or bottom right of the screen on its own

I have a Kensington usb mouse connected to my usb hub, which is in turn connected to my 2015 MBP. My mac runs in clamshell mode most of the time, and I use Karabiner Elements to block the internal ...
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iPhone charging gives warning: “[cannot connect USB device]” then “[enter passcode]”

I am using iPhone 6 running iOS 12.4. I had been having trouble getting good connection between lightning cable and charging port. I cleaned-out lint/dirt from the port about 1 month ago, and all was ...
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44 views

Can I script actions while screensaver is engaged and a USB device is attached?

I have a Mac mini running Mojave that starts a screensaver at login. The screensaver is with password prompt, meaning that until a password is entered, it will not show the desktop. I only have the ...
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39 views

How many QHD displays can I connect to one side of the 13" MBP 4 TB 2016?

I own a CTO 13" 2016 MBP w/ 4 ThunderBolt ports and I am in the market for 2 QHD (1440p) external displays. While the displays themselves are not USB-C / Thunderbolt compatible I was thinking of also ...
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30 views

USB-C Digital AV Multiport adapter periodically not detected without reboot

I have a Macbook 2012 (with a single USB-C port) and the official Apple USB-C digital AV multiport adapter. Frequently, my device has started failing to detect the adapter. If I go to System ...
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USB keyboard suddenly doesn't respond with MacBook Pro

So I got new a HP USB keyboard with my MacBook Pro. It worked fine for a couple of weeks. Now it suddenly stopped responding. After a lot of research on the web, I already tried the following: Use ...
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50 views

Download MacOS Mojave to USB-Drive from a Windows PC [MacStore not accessible without Mac?]

I'm having a very hard time repairing a broken Mojave->Catalina update on a MacBook Pro from 2015 for a friend of mine. This is what happened: After doing the Update, the Mac wouldn't start up ...
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44 views

Connecting to MacBook Air 2017 with usb-c connection

I have my work computer that I connect to my dual monitor setup, and my MacBook Air 2017 that I can't since it doesn't have a usb-c port. Is there any way I can use the same hub with ubc-c ...
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Sometimes Mac doesn't recognize my external hard drive

This question has been asked on here many times before but I cannot find a solution that actually works. Macbook Pro: 2015 MacOS 10.14.6 External Hard Drive: Seagate 4TB (2 TB partitions) (No ...
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78 views

How can I completely erase a “read only” USB drive?

I have a USB drive that appears to be stuck as a "read-only" device. I have tried to format it as MS-DOS (FAT) Master Boot Record using Disk Utility, but I get the following I also have followed all ...
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41 views

Isolating power supply issue to USB-C cable

Immediate Q: Is there a way to test for faults (power supply and/or data transfer) in a possibly failing USB-C cable, by plugging each end into different ports on the same machine (2018 MBP) and ...
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186 views

Thunderbolt 1 to USB Type C adapter?

I have a 2012 MacBook Pro. It has a Thunderbolt (Mini DisplayPort) port. I'd like to plug a USB Type-C device into it, since Thunderbolt is faster than my USB 3.0 port. I'm having a hard time ...
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65 views

iPad USB-C Internet Connection: Tethering to Macbook

I have an iPad Pro (2018 3rd Gen) with a USB-C Port and a 2018 Macbook Pro with a USB-C Port. Can I tether the iPad to my Macbook's Internet connection using a USB-C cable?
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59 views

How to backup data from one external drive to another (one-way)

I have a 5TB external disk (WD My Book), which I use as my main hard drive. It is always connected via USB to my Mac. I've just bought another 5TB external disk (Seagate backup plus portable), where I ...
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191 views

2017 MacBook Pro kernel panics when it sleeps after update to Catalina

After I update to Catalina (10.15.2), the system will freeze when I plug the USB keyboard to the Macbook. I ran the Hardware check, but there is no thing broken and I also had tried to rest the SMC. ...
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52 views

Encrypting a USB for use on Mac *and* Windows

I have an external USB drive and I would like to encrypt it – preferably on Mac, however Windows is an option. The USB should be ready to use for both Windows and Mac without the use of third-party ...
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21 views

list files for Mac OS X install on bootable USB

This is about the fifth time I am trying to create a bootable USB to install El Capitan on a 2008 iMac, if I could get a image of the files that are on a working usb to compare with it might just help ...
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1answer
109 views

Can the Magic Keyboard be used with the USB-C to Lightning cable?

Can the Magic Keyboard be used with the USB-C to Lightning cable and have the keyboard actually work as a keyboard (not just charge the internal battery)? The "Here's what you can do..." mentions ...
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69 views

USB C hub temperature

I just replaced my 6 year old MBP with a new 16" MBP which requires the addition of adapters to connect just about anything external. So I got a USB-C hub with HDMI, RJ-45, USB-3.1 and SD card ...
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2TB Seagate Expansion Portable Hard Drive not appearing in Disk Utility

I know this has been asked before but I wanted some help ASAP so recently my Seagate 2TB External Hard Drive was working fine, then all of a sudden it stopped working while I was copying some JPEGs to ...
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50 views

Which USB ethernet classes does iOS support

Firstly, I posted the same question on stackexchange and did not know about this community. I'm busy with a USB ethernet implementation to provide an ethernet connection to an iPhone over USB. I'd ...
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What are the implications of leaving the XHC20 interface “up”?

In order to sniff USB traffic on macOS, the XHC20 interface must be "brought up" by executing the following command: sudo ifconfig XHC20 up Many online tutorials also suggest to disable the ...
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152 views

How do I Eject USB Storage in iPadOS 13

I happily saw that I can use external USB storage with my iPad Pro (2018 3rd Gen) using iPadOS 13 either directly from a drive with USB-C or a Flash Drive using the Apple USB-C-to-USB adapter. So far ...
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1answer
210 views

Unable to open serial port using simply python script on macOS Catalina: [Errno 16] Resource is busy

On a brand new MacBook16 running Catalina (10.15.1) I am getting the following error trying to connect to an FTDI FT232R USB UART device. Python 2.7.17 (v2.7.17:c2f86d86e6, Oct 19 2019, 16:07:15) [...
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MacBook Pro 2017 has problems when live booting from usb into parrot linux distro

I used Balena Etcher software to flash my usb with the image / iso of parrot linux distro the security edition. the live booting went fine but when it was all booted up I could not move mouse or do ...
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63 views

error using tty.usbserial-xxxx: could not open, resource busy

Since one year I'm using a MacBook Pro 13 upgraded to Catalina in October. I use the Mac to program same embedded module via RS232 (different adapters with different chips, e.g. FTDI) and it is still ...
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How does a Macbook handle USB devices? (USB not working correctly)

I have this setup right here at my work desk, I am using a MacBook Pro 2019 13': For some reason the USB-A mouse does not work on USB-C Port 2. I'm a Windows user, and I know that in Windows, each ...

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