Questions tagged [usb]

Devices that use the Universal Serial Bus data interface

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How do I pass a printer URI to lpadmin?

I'm trying to connect an LexmarkE210 to a Mac. Running sudo lpinfo -v | grep 210 # find LexmarkE210 URI gives me usb://Lexmark/E210?location=1a140000 as the URI for the printer. I've tried lpadmin -...
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How to determine the device name of a USB connected printer

I'm trying to solve a printer issue and I'm attemting to send a text file via Ghostscript to a locally attached USB printer. To do this, I need the device name (/dev/<someidentifer>). How do I ...
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How do you create a rEFInd boot manager USB disk?

The following command does not run, it returns a "file not found" message. The instructions do not say where the downloaded file should be placed, nor whether it should be unzipped or not! ...
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Run a script when device is connected via USB C

How can I run a specific program when a new device has been plugged into a USB C port?
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Bidirectional Charging on Macbook Pro (2019)

I am using a bidirectional USB-C to Displayport cable (CableCreation PN: CD0738) to connect my 2019 Macbook Pro to a BENQ PD2700U monitor. The description stated that this would allow not only video ...
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looking for external speaker to amplify my Macbook pro 13" mid 2012

I'm looking for speakers, but every site I go to only refers to the internal speakers. Are there any speakers that can be attached with a USB?
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How to format Hard Drive and reinstall Catalina from USB

I have a disk that's so full I cannot install Catalina in Recovery mode as there is not enough space. I have a pre-formatted and bootable USB but when I try and install the image to the HD it fails ...
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How to run Windows 10 from USB on Macbook? [duplicate]

I need to create a portable windows To Go workplace for my job and make it runs on a Mac computer, i tried WinToUSB tool and it didn't work, it keeps stucking at 0% when creating Windows to Go with a ...
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Hub disconnect from MacBook Pro 2018 Touch Bar

I have a problem with my MBP 2018 Touch Bar. Today I unplugged two hubs (with ethernet cable, HDMI, SD card reader and 4 USB ports)... and after this, when I plugged again the device the computer ...
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iPhone 12 charging

What I read about charging an iPhone 12 seems very confusing. Here's what I understand and my questions. It supports wireless charging at 7.5 Watt. It supports wireless charging at 15 Watt with a &...
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iBook G4: black screen when booting with USB plugged in

I have an iBook G4 with Tiger on it, and I thought I would try out dual-booting with Lubuntu just for fun. I downloaded Lubuntu 14 and prepared a USB 2 stick to boot from using dd. So far, so good. ...
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1answer
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Slow Transfer Between External Drives

I have two external USB drives connected to my 2012 Mac mini, and am finding transfer speeds between the two to be really slow. I need to transfer 38GB of stuff. With rsync, I was getting ~60MBps. ...
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Mini Mac 2.1 USB not working

My USB ports are not working on my Mini Mac 2.1 (2007). I can turn the computer on and it starts perfectly on the monitor. However, since the USB ports do not work I cannot use my mouse or keyboard (...
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2017 MacBook Pro - USB-C to Display-Port not working?

Recently purchased a USB-C to HDMI cable for my 2017 13'' MacBook Pro with 4 Thunderbolt 3 ports. All was working well until I plugged in my charger and I noticed the charging icon flashing on and off,...
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1answer
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How can I monitor MacBook USB bandwidth?

I have a late 2017 MacBook with the latest Catalina. Using two Anker USB extenders, I have devices in pretty much every port, including six large external hard drives, a webcam and an external SD card....
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How to sniff packets between a iOS device and an ethernet (via USB) device

I have a USB camera that does work with iOS devices only on a specific application made by the manufacturer. When connected, it creates an ethernet interface for which I'm always assigned the same IP ...
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Macbook Pro not detecting Dell monitor - Catalina [duplicate]

I am trying to connect a 15-inch Macbook Pro 2017 to a p3418HW Dell monitor, through a USB-C to HDMI adapter (VTIN 4Kx2K USB-C to HDMI). The monitor shows: "No HDMI signal from your device". ...
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Input devices connected by cable are randomly freezing

I got a MacBook Pro 2020 with the lates MacOS installed. I generally use it with 2 Monitors and a Mouse and Keyboard connected via USB-C Kabel, or Dongle (Happens for both options). I can use ...
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Macbook not detecting all USB keyboard keys

I have a Macbook Pro 2019. I recently purchase the Corsair K68 RGB keyboard which has a common USB Type-A connector. I used OTG for USB A to USB C. The first time mac detects the new device. Worked ...
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Macbook Pro 2009 shows USB bootable disk but won't go any further

I am trying to install fresh OS on my Macbook Pro 2009. I installed Sata SSD. I have bootable USB from my other Macbook 2012. Macbook Pro will recognize bootable USB SSD but it will not go any further....
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macOS Cataline 10.15.7 crashing due to kernel panic in USB

I keep getting this crash while the computer sleeps: https://pastebin.com/dFGvusQD. It seems that it has to do with a USB device? Is it because I unplugged my hard drive a while ago? Any known ...
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Can macbook air (2020) be charged from airplane USB?

I read somewhere that the new macbook airs (the ones with USB-C) can be charged slowly from any USB source using a USB-C to USB-A adapter. I'd imagine that a plane USB port delivers 5W or 10W power. ...
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1answer
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Can't reinstall OS on MacBook Pro from 2009

I formatted the drive on the MacBook Pro because my sister used to own it (she bought it off of ebay) and it had a lot on it. When I started it back up, it booted into OS X utilities and when I tried ...
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Thunderbolt 2 and USB C dock solution connecting MBP 2015 and Surface

I have access to the following computers: Mid-2015 MBP with Thunderbolt 2 / USB A Microsoft Surface Laptop with USB-C capability I am looking for a docking device to connect two monitors (not fussed ...
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Why is my mac stuttering / lagging every 2 seconds + USBC Monitor

I am having a weird issue. I was just connecting my new ultrawide monitor and now my mouse stutters every 2 seconds for about 200ms. (Rough feeling, not measurements done). This happens regardless if ...
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What attachment do you need to plug the Apple EarPods that came with the iPhone 8 Plus into a Samsung Galaxy Note 20 Ultra (USB Type-C)?

I have the Apple EarPods not AIRpods. I'm trying to find the attachment that would allow me to plug those directly into my Samsung Galaxy Note 20 Ultra which uses the Type C adapter.
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iPad Not connecting to MacBook Air via USB

I have a 6th generation iPad, and a Macbook Air late 2015. Up until today, I've had minor issues connecting it via USB (such as the charge cutting in and out), but nothing I haven't been able to get ...
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USB Card Reader on Mac OS 9?

I kept reading that Mac OS since 8.6 had support for USB Mass Storage (with it being built-in since 9.1). I was having no success with this on 9.2.2 until I realized that my problem was that I was ...
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FAT16 on a USB drive with Mac OS 9?

I can read a USB disk formatted as FAT32 on my PowerBook G4 with Mac OS 9.2.2 but it does not recognize and asks then I erase the disk if I insert one that is formatted as FAT16; formatting it as ...
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MacOS change display orders after restart

In the company, we have Samsung S24E650 monitors - for each MacBook Pro, we have connected two of them by different kinds of USB-C hubs. When we unplug the monitors and plug it again monitors usually ...
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Clamshell mode: MBP doesn't boot when USB-C external display is switched on

I have a Dell U2520D monitor connected with USB-C to my macbook pro 16' 2019 in clamshell mode. Before, when I switched the monitor on, the macbook booted like a charm. Now, I have to unplug/plug the ...
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2TB USB drive not showing in diskutil, fsck not running, not showing in Finder

I recently purchased a 2TB USB drive and loaded a few files onto it after formatting it to FAT32 so I could use it on my TV. I accidentally unplugged it without unmounting/ejecting it first and ever ...
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Can't connect to a serial port.( MacOs Mojave 10.14.6)

My goal is to control a clock over a Serial Connection in Matlab. I have an RS232 Serial Port Connected to a usb 3 to usb c hub. In the system information selection the hub is described as: 4-Port USB ...
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Can I connect a Magic Trackpad to a USB bluetooth dongle instead of my MacBook?

I know the Magic Trackpad is pretty hard to use with two different MacBook and there is that unpair/pair manipulation to do. But I would like to know if I could not do a pretty workaround. I have one ...
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What USB devices does my iPhone (iOS14) with the USB 3 Adapter support?

I have an iPhone 8 upgraded to iOS 14 with an USB-port provided by the Lightning to USB 3 Camera Adapter. I have now tried to figure out which USB-devices I can use with this. I understand that Files ...
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1answer
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Cannot mount USB hard drive

I have a 4TB USB hard drive (WB Elements) that I want to mount On a Macintosh Pro 16. Unfortunately it cannot be mounted and the Mac does not show up any error messages. It also does not show up on &...
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1answer
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Mac Mini with Ubuntu how to restore MacOS

I have a Mac Mini 2012 Server which has Ubuntu running on it. The issue I have is that I cannot seem to get it to boot from USB at this point in order to reinstall MacOS. Holding down Alt/Option seems ...
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How to determine that macOS is having difficulty reading an external drive?

I am running a 2017 5K iMac running Mojave 10.14.6. I have been experiencing complete system freezes periodically, where nothing on the desktop responds to mouse clicks or keyboard presses. Note ...
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1answer
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Charging MacBook Air with a fast charger from usb-c

I have a MacBook Air 2020 and forgot my charger at work. Evidently I need to charge it in a few hours. I have One Plus phone with a fast charger which is USB-C compatible (5V, 4A). Could I use it to ...
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HDD connected to mac with thunderbolt 3 to USB 3 adaptor is not recognized

I have a MacBook Pro (13-inch, 2017, Four Thunderbolt 3 Ports) running High Sierra. I usually leave my HDD on with the adaptor, then plug the adapter into the same port every time I need to use it. ...
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How to force Mac to recognise USB drive

During my app development/testing cycle, I'm frequently re-connecting my Garmin watch as a USB drive to my Mac, and am frustrated having to wait for the sometimes 30+ seconds before the Mac ...
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USB-C to HDMI/USB Adapter for projection and for screen recording on mac

I bough recently an Apple USB-C to HDMI/USB/USB-C adapter (also called USB‑C Digital AV Multiport Adapter) which I am using with an iPad Pro. I wonder now whether I can use simultenously the (1) HDMI ...
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External USB-C dock monitor recognized by Macbook Pro 13 but not 16

I recently upgraded from a 2018 13" Macbook Pro (with touch bar, if that matters) to a 16" MBP. I've used a USB-C lapdock (HP elite x3 lapdock) as a portable external monitor for the 13"...
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Connecting an external mic to MacBook Air (13", 2017), with MacOS 10.15.5 Catalina

I am trying to connect my new RODE wireless mic to my Macbook Air. Tried headphone splitters, but the computer does not recognize an external mic. (does not switch from internal to external mic). ...
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Kensington SD4000 / Displaylink USB Hub not working with MacOS 10.15.6

I have a Kensington SD4000 USB Hub which I'm using with a Samsung U28E590 4k monitor. And actually I have a seperate ASUS USB Hub with a another 4K monitor, and this is working fine. This had been ...
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Booting from USB MacBook pro late 2009

So I dug up my old MacBook Pro, It previously had El Capitan running on it. The el Capitan was kind of getting slow, so I opted for making a factory reset(Erase mackintosh HD). Now I am trying to boot ...
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macOS X El Capitan bootable USB not working

I have created El Capitan mac OS X bootable USB using TransMac and El Capitan dmg from Apple. When I boot the iMac (2011) and holding option key, the USB doesn't show in boot menu. I have changed the ...
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1answer
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Finding a drive adapter to re-use the old hard drive from a Macbook Pro early 2015 13"

I recently upgraded the hard-drive on my Macbook Pro 13" early 2015 model. I'd like to use the old 128gb hard-drive as an external USB disk, but I'm having trouble finding the adapter to make it ...
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can an Ipad with only a Lightning to USB cable be used to control a lasermaster 2. Lightburn software is hoped to be used

I've purchased a LaserMaster2 engraver. I would like to use a current Ipad to run LightBurn software to control it. The Ipad only has a Lightning port and I have the Lightning to USB cable I use to ...
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Multiple monitors with MBP 13" 2020 and HyperDrive Duo 7-in-2

Since I got my MBP i've been working with 2 additional monitors, both of them connected via HDMI cables connected to a USB-C hub (one is Anker's, other one some unknown chinese product) and then to a ...

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