Questions tagged [usb]

Devices that use the Universal Serial Bus data interface

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1answer
23 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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1answer
17 views

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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1answer
87 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
31 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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14 views

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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27 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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15 views

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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1answer
130 views

macOS Catalina USB keyboard doesn't work after being taken out and in again

After I upgraded to macOS Catalina on my MacBook Pro from 2013, my USB keyboard stops working every time I unplug it and plug it in again. Every time, I have to reboot with the keyboard plugged in to ...
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23 views

Is there a fix for UGreen USB-C to HDMI cable not working in Catalina?

I have a UGreen 4K Nylon USB-C to HDMI cable which mysteriously stopped working with my 2016 15" MacBook Pro as soon as I upgraded to Catalina. Has anyone else had issues with this cable and are ...
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22 views

Video issues when connecting Macbook Pro 2017 with 2 Dell external monitors

I have a Macbook Pro 2017 (Mojave 10.14.6) connected to 2 Dell U2417H monitors. Monitor 1 is in portrait mode and monitor 2 is in landscape mode. Monitor 1 is connected via an HDMI cable straight ...
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2answers
180 views

Catalina - USB Serial Cables seem to be broken

TL;DR - How do I make a USB Serial cable work on Catalina? I work as an embedded software developer. I write software on small circuit boards like an Arduino or BeagleBone or RaspberryPi. You might ...
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1answer
40 views

Tethering an iPad / iPhone to a Raspberry Pi

Questions My concerns are focused on enabling USB tethering in an iDevice (iOS 12 iPhone X and iPad Air): What are the steps for tethering IOS 12 devices? Is it just one switch on the Android or ...
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11 views

USB powered off after boot with Power Mac G4

I have a Power Mac G4 that I'm trying to boot off of a USB drive, I have gotten it to boot, but after it loads the kernel, the USB shuts down and the kernel panics because it cannot check the drive ...
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0answers
15 views

MacBook not booting up nor recognising bootable usb

I have this old macbook that I wanted to convert into a ubuntu server, however it didn't recognise my ubuntu server bootable usb which my newer MacBook Air did. After tying to use a 32 bit version and ...
3
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1answer
73 views

Is the distance between the USB-C ports on the 2019 Macbook Pro 16“ exactly the same as on earlier 15” models?

Asking so I know whether an older USB hub will fit.
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1answer
22 views

Can I use a new USB C dock with an old USB A socket? Can then the PD socket be used to supply more power to the dock?

Can a new USB C dock like this for example: USB C dock with Power Delivery be connected and work with an old Macbook (or other USB A gen 2.0 or 3.0 computer) using an adapter like in the picture for ...
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0answers
20 views

Macbook Pro 15 Late 2015 USB rapidly disconnecting [duplicate]

I just got a macbook pro 15' late 2015 from my work. I have an issue where my ipad and iphone cant be charge or connected to the macbook, it keeps disconnecting and it charge for one second and then ...
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29 views

External monitor not working properly on macOS Catalina

Before upgrading to macOS Catalina my AOC 2369VM monitor works fine with HDMI - USB Type C adapter. Once I installed macOS Cataline, the monitor immediately became badly connected or not connected at ...
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0answers
51 views

USB-C to Lightning cable: Connecting iPhone to USB-C peripherals

The iPhone 11 Pro/Pro Max come with USB-C to Lightning cables for fast charging, and the regular iPhone 11 supports them. Regular Lightning supports HDMI output via an Apple dongle. Does the USB-C ...
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2answers
39 views

How to import miniDV videos without iMovie over USB?

I have an old Panasonic camcorder (model PV-GS35) that uses miniDV. It has a USB port for connecting to a computer. However, I cannot for the life of me get it to connect to my MacBook Pro running ...
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15 views

Intermittent detection of USB 2.0 keyboard thru Anker hub on macOS Catalina

I am encountering a very frustrating issue since purchasing a MBP 2018. I have a USB 2.0 Apple Keyboard. As new MacBook models only have USB-C ports, I had to purchase a USB hub (Anker 7-in-1). ...
1
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1answer
42 views

Can't boot from USB or CD/DVD

I have an iMac 4,1 running OS X 10.5.8 that I want to install Lubuntu on. I have a USB drive and a DVD, both with the ISO burned to them, but I can't boot from either. They don't show up in Startup ...
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0answers
27 views

What software and hardware would be needed to make an iPad work like a TV accepting data from the lightning port?

I am trying to have my iPad (3rd gen) read television / video type HDMI input. I have an HDMI to USB-C conversion cable and the iPad is recognizing the accessory (not sure how you know this, please ...
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0answers
8 views

MacBook can't see Cinema Display USB hub without restart; Is there a way to do a “discover USB devices” without restarting?

I have a 15" MacBook Pro and a 24" Apple Cinema Display. The Display has three connectors ... Mini Display Port + USB + Power ... and I have an Apple USB keyboard and Logitech USB mouse plugged ...
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1answer
15 views

USB C to DisplayPort hub works with VGA but not HDMI

I have a Cable Matters USB C to Dual 4K DisplayPort Hub and a MacBook Pro 2016 (No touchbar). I am using Windows on Bootcamp. The hub works fine with a DisplayPort to VGA adaptor, but it doesn't work ...
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47 views

USB Keyboards stop working after waking since upgrading to Catalina

I have a MacBook (Retina, 12-inch, Early 2015). I have 2 USB keyboards, one at home and one at the office, that I connect through USB-C hubs that has USB-A ports. The hubs I leave connected to the ...
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1answer
51 views

Dual External Monitors on a (late) 2017 MacBook Pro

I'm trying to set up my 2017 MBP with two external monitors. I have a Totu USB C Hub, TOTU 12-in-1 Type C Hub with dual HDMI inputs. It's supposed to allow me to use two external monitors with my MBP ...
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2answers
51 views

Can I use any USB charger with my iPhone?

I'm not sure its the right place to ask but, I just wondered whether I can charge my iPhone Xr with my Samsung adapter. I understand it works and no harm is done to the iphone. I know that the iPhone ...
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0answers
15 views

Preview App - Images from USB stick not showing up in the same window anymore

macOS Mojave Version 10.14.6 Summary of problem I can't see the images from a USB in the same Preview window as i can those that are on my computer. Expected behavior If I click on an image from ...
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1answer
34 views

What kind of mouse has best performance to use with a Mac?

I recently got a Mac upgrade to a new MacBook Air (10.14.6), which only has two new small USB-C connections. I therefore bought a USB-C to old USB adaptor to be able to connect my harddrives, USB ...
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0answers
141 views

MBP rebooting after sleeping for a long time

After upgrading to OSX Catalina, my MBP seems to be rebooting after sleeping for an extended amount of time (usually overnight when I am sleeping). After booting it back up and logging back in it ...
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0answers
14 views

External storage not detected on macbook air 2015

So I have a MacBook Air late 2015 that I recently got from a friend, but neither of the usb ports work for usb storage nor does the sd card slot work. However whatever I connect does show up in the ...
2
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1answer
14 views

Capturing USB HID keys in OSX, for keyboard?

I'm trying to find an application that allows me to understand which USB HID codes are being sent when pressing keys on my iMac keyboard? Is anyone aware of how to do this? I was going to ask on the ...
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1answer
20 views

How to connect MacPro 2013 Thunderbolt 2 to USB C

I see several posts about USB-C and TB-3 to TB-2 but are they reversible? As I cannot find a TB-2 to USB-3 device I thought maybe I could connect my MacPro (Late 2013) to a USB-C hub which has USB-3 ...
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0answers
19 views

How can I create a Mac OSX Catalina USB? [duplicate]

I have a MacBook Pro which I upgraded to Catalina. I would now like to create a USB drive to upgrade some other Mac devices which are airgapped (no internet access allowed), however the Mac OS ...
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0answers
15 views

Disable USB ports for standard user accounts

I want to disable my USB ports on my MacBook Pro for standard user accounts. When I plug in a USB device I want the port to become enabled after I type my admin username and password or use Touch ID....
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1answer
18 views

Bad USB not recognized by Finder

I have a 15 GB USB that I want to use as a macOS installer, and it got corrupted. I tried to reset it, but Finder and the normal Disk Utility does not recognize it, the Recovery Disk Utility loops on ...
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0answers
11 views

How can I set which connected devices my iPad Pro (2018, iPadOS 13) uses as sound input and output?

When I plug my Blue Yeti external USB mic into my iPad Pro, I can record with the mic, but I don't get sound from my iPad Pro. It seems the iPad is trying to output the sound via USB to the mic ...
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0answers
12 views

Does it make a difference when multiport adapters are connected to 2 (instead of 1) USB-C ports of the MacBook Pro?

Some adapters are connected to the MacBook Pro via 2 ports, e.g. the Purgo 7-in-2 USB C Hub Adapter. But does it have any advantages against adapters which are only connected to 1 port, other than ...
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15 views

Are USB 3.1 (2nd gen) ports which the new MacBook Pro (2019) uses compatible with the external wired Apple keyboard?

I'm currently using the MacBook Pro 2019 and would like to use it with my external (wired) Apple keyboard (A1243) via Apple's USB-C to USB adapter. But unfortunately, that MacBook regularly doesn't ...
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0answers
23 views

Mac Mini is slow when keyboard and mouse are detached

I use a very basic and cheap unit to switch one USB keyboard and one USB mouse between a PC and a Mac Mini. The unit is an Aten CS22U. It all works fine, albeit with a few seconds delay when ...
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0answers
28 views

Trying to create a bootable USB drive for Mac Mini

I have a Mac Mini Late 2012. Trying to create a bootable USB drive. I have a USB Yosemite install drive. It has worked, many times to load Yosemite to an internal drive. I plugged this in to the ...
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0answers
13 views

Is there an adapter to combine MacBook's “Thunderbolt & USB & Power” out into a single “USB-C” cable for a new monitor?

I currently have a 2015 13" MacBook Pro and a 24" Apple Cinema Display monitor. The monitor has three connectors built into one cable: Mini DisplayPort, which fits into MacBook's Thunderbolt slot (...
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0answers
15 views

USB problem in Macbook Pro [duplicate]

I have a MacBook Pro (Retina, 15-inch, Mid 2015). My left side USB does not work while on the right side its perfectly fine. I am not sure whether its software or hardware problem.
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0answers
19 views

USB DAC to Thunderbolt 2?

I have a 2013 iMac with Thunderbolt 2. I want to connect a USB Digital to Analogue Converter (DAC) to the Thunderbolt port to minimise the traffic on the USB bus. Any recommendations?
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14 views

Launchctl starting Virtual Machine before USB is intitiated

I have a plist file located in /Library/LaunchDaemons that starts a Virtual Machine headless with Ubuntu on it. The problem is however that USB probably isn't initiated before the VM is started, and ...
2
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1answer
95 views

Can an iPad Pro Charge a MacBook Pro?

I have a 2018 iPad Pro and a recent MacBook Pro (with USB C). Is there any way I can control what charges what when I connect the two? If I connect the two with a USB-C charger, my MacBook ...
2
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0answers
47 views

How to create bootable Windows 10 installer USB for PC?

I've downloaded Windows 10 from Microsoft and want to create a bootable USB stick for a PC. I've tried to flash the image with dd, but the stick did not boot. Then I've flashed the image with ...
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0answers
51 views

How to read Mac OS Extended (Journaled) USB drive if I'm getting: “The disk you inserted was not readable by this computer”?

So, I wanted to do a fresh install of Catalina, and have done a backup on my USB drive. Before transferring the data to USB, I've formatted it as "Mac OS Extended (Journaled)". After I've installed ...
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0answers
29 views

Finder opens only when USB stick inserted

I'm experiencing some issues with Finder after an update on my Mac (Mojave). When I click the Finder icon in the Dock, nothing happens. It does not open. However, when I insert a USB stick, wait for ...