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Questions tagged [usb]

Devices that use the Universal Serial Bus data interface

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Installing USB drivers

Is there a way to force macOS to reinstall a set of USB drivers for a device? I have a pair of headphones from Sennheiser that are no longer recognised, i.e. not shown as an output device in the ...
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17 views

iMac with Mojave disconnects from WiFi when sleeing

My iMac late 2012 with Mojave is using several minutes to connect to WiFi after i wake the machine from sleep. Until a few weeks ago, the machine was connected to WiFi in matter of seconds after i ...
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1answer
31 views

How to check if a USB hub supports USB 3.0?

I recently bought a USB type-C hub for my MacBook Pro. I found the data transfer speeds to be quite low (from my USB 3.0 external hard disk). I suspect that the USB hub doesn't support USB 3.0 data ...
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37 views

Windows 10 on external drive through boot camp

I've installed Windows 10 on external drive (SSD through USB) on a previous Macbook pro and it was working fine. I bought a new one now, but that same external drive doesn't boot anymore. Instead it ...
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22 views

Issue with iPhone for playing music in the car

For the past 2 days, I haven't been able to play music from my iPhone in my car with bluetooth, nor with a USB connection. If I connect the iPhone with bluetooth, the phone-calls work well. I have ...
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14 views

Share MacBook Ethernet connection with Nintendo Switch via USB

I have a MacBook that is connected to the Internet via an Ethernet-to-USB adapter. I am already successfully sharing this connection with an iPhone via the Sharing panel in System Preferences, per the ...
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14 views

2014 MB air to Dell S2718D not showing QHD resolution

I have an early 2014 macbook air trying to connect to a Dell 27 inch QHD monitor (model S2718D) the monitor has 2 usb SS ports, a full size hdmi, and a usb-c port. I have a miniDp to hdmi cable that ...
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1answer
37 views

Using Late 2013 MacBook Pro with LG Ultrafine 4K Monitor - USB-C to Thunderbolt 2?

I bought a used LG Ultrafine 4K Monitor with USB-C to Thunderbolt, the ones Apple are selling, for a good deal. I assumed I could make it work with a simple USB-C to HDMI cord, but this didn't work ...
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Toggle disabling/enabling connected USB keyboard without unplugging

I have a SOHO setup where I use a USB keyboard and a USB mouse connected to my MacBook. The placement of the USB keyboard relative to my MacBook is as shown in the picture: I primarily use the ...
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19 views

Third party keyboard no longer recognized by OSX

I have a Func KB-460 mechanical keyboard which has been connected to my Macbook Pro (via USB) for a while now. This past week, it has stopped co-operating with OS X. I tried it on a friend's Windows ...
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1answer
14 views

Adding a third monitor to my iMac 2009

I have a iMac 2009 later with High Sierra OS, I am using my mini display port already to 2 other tvs. I need to connect a 3rd tv but to display a different display. Only other ports I have available ...
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23 views

USB-C video adapter not working

I'm running a 2018 MacBook Pro 15" with Mojave. I recently purchased a StarTech USB-C to VGA adapter, model CDP2VGA. Unfortunately, the Mac does not seem to detect the adapter. I know the adapter ...
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14 views

External keyboard doesn't show as separate keyboard to configure

MBP 14,1 (13" 2017 two TB ports) At work I have a Dell USB-C dock that my external keyboard connects to - display is connected differently. There, like everywhere else I've seen this, when I connect ...
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1answer
35 views

External SSD drive not detected as SSD drive

I've got a Sandisk Extreme SSD drive as an external drive for my MacBook Pro. It has no problems with connecting to the MacBook or being recognized as an external drive. The problem is it is not ...
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0answers
51 views

External HDD keeps ejecting by itself from MacbookPro 2018

I have a 2018 Macbook Pro and am trying to connect an Icydock external HDD (in raid 1 configuration). This external HDD connects without any problems to my older 2014 MBP. On the new MBP, it is ...
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10 views

iPhone constantly dropping connection via USB to my MacBook Pro [duplicate]

I have a MB Pro Mid 2015 (15'') and an iPhone SE 128GB and every now and then when I connect the phone to the laptop it drops the connection after few seconds, then connects again, drops etc... ...
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6 views

Unable to connect my High Sierra MacBook Air to M4250 Cannon printer

I find myself unable to connect my High Sierra MacBook Air to my M4250 Cannon printer (both work fine separately). I've donwloaded and installed several drivers from https://www.canon.co.uk/support/...
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34 views

2018 MacBook Pro (w/ Touch Bar): Are all 4 thunderbolt/USB-C ports capable of supporting a monitor?

I have a fairly new 2018 13" Macbook Pro w/ touchbar. Only the two USB-C ports which are closest to the corners seem to support an external monitor. Is this expected behavior? To clarify, there are 4 ...
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41 views

Bootable USB for Windows 7 isn’t showing up on MacBook Pro 12,2

I made a Windows 7 installation USB using Microsoft’s installation tool on my Windows PC. When I boot the Mac while holding Option. Only the Mac disk appears. The USB is NTFS. I checked if anything is ...
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37 views

MacBook Pro (Retina, 13-inch, Early 2015) Thunderbolt 2 port for small second display (ASUS MB169C+ Portable USB Monitor for eg)

MacBook Pro (Retina, 13-inch, Early 2015) Thunderbolt 2 port for small second display (ASUS MB169C+ Portable USB Monitor for eg) can I get a bidirectional adapter like the Thunderbolt 3 (USB-C) to ...
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31 views

Macbook gets confused by switching external USB keyboard

I have two different locations to use my MacBook pro and attach an external USB keyboard at both places. They are both 104keys and have identical layouts. When I first plug in the keyboard it often (...
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1answer
26 views

Unable to delete files & folders from my USB drive

I got this USB stick with some music on it. I copied the content on my machine. Two days later I wanted to delete the data from the USB drive. The Move to trash option is missing, and if I try to drag ...
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12 views

make USB 2.0 IR receiver hub to be recognize as a mouse

The built in trackpad of my macbook 2011 has a problem on it's functionality, so I go on System preferences > accessibility > mouse & trackpad then check the Ignore built-in trackpad when mouse or ...
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1answer
20 views

Lacie External Hardrive doesn't show up on Mac or in Disk utility

My lacie hard drive was making some strange clicking noises when I put it in my mac. I have also tried this in a PC. It now is just not showing up in the devices and also when I try to access it in ...
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24 views

No more video output over USB-C [Solved]

I bought an LG 27UK600 a while ago, to go with my 2016 Macbook Pro. It worked perfectly for about 3 months, until a few days ago, when the Macbook's display did something weird (some strange colors) ...
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1answer
31 views

USB CDC ACM device cannot be set to use 1.5Mbaud

I have a device which supports a USB Virtual COM port. When the device is connected and the serial port is configured to use 115200-8-N-1, I have no problem using minicom, screen, etc. to communicate ...
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20 views

iPhone SE: broken screen and no connection via USB

I have an old iPhone SE from which I need to recover all media, but its screen is broken. I've tried the suggestions given at https://www.restore-iphone-data.com/unlock-iphone-with-broken-screen.html ...
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0answers
36 views

Bootable USB stick trying to install on USB instead of hard drive

So I‘m trying to install Ubuntu for Dual Boot on my MacBook Pro. I‘m running macOS 10.14 with APFS, created a new partition formatted as FAT32. Created bootable USB stick with Etcher and so forth. So ...
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15 views

My USB device (camera) works but doesn't have device-entry. How to find it?

My USB device (microscope camera) works with my MacBook (lite version of a microscope software) but doesn't have device-entry, although it shows in the USB tree in system information and has location ...
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22 views

Set default boot disk to USB on macmini with T2 chip

I need to setup boot always from USB stick. I can boot it from USB by pressing Alt and selecting specific source. Buy how to do it permanently? Is is possible?
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24 views

MacBook Pro: USB 2.0 flash drives not working while USB 3.0 drives work fine

I have a Late 2013 15 MacBook Pro. After updating it to macOS High Sierra 10.13.4, USB 2.0 flash drives has stopped working. They are simply not recognized by the operating system. However, USB 3.0 ...
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Macbook Air USB ports stop working one after another until none (of the two) remain

I have a 2017 Macbook air that has a nice habit of sequentially disabling USB ports (even while they are not being used). I am forced to restart my machine at random times in order to get them back to ...
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1answer
27 views

How can I charge powerbank that has single C-type in/out from MacBook?

I’m using Xiaomi Power Bank 3 which has following sockets: USB-A type low output USB-A type high output USB-C type power delivery input/output up to 45W It usually works fine, I can use MacBook ...
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44 views

OSX 10.14.4 now Requires Reboot to see External USB Drive

ENVIRONMENT I'm running OSX 10.14.4 on a mid-2015 MacBook Pro. Plugged into the MBP is the MagSafe power cord, and a Thunderbolt 2 cable connected to a 27" Thunderbolt monitor. That monitor is ...
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Plug in mouse on USB, Macbook crash then reboot

Sometimes happens that my macbook pro 2009, reboot when i plugin a usb mouse: Anonymous UUID: F7E860F6-8C86-01A6-6879-40F90DC7168D Sat Apr 13 09:30:00 2019 *** Panic Report *** panic(cpu 0 ...
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1answer
48 views

What are possible reasons for external keyboard input lag?

I have a "Microsoft Sculpt Ergonomic" keyboard, connected with USB to my Mac 13" (from 2018). The keyboard input starts to lag at some random times. I have been using the keyboard on my older Mac 15" (...
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1answer
71 views

Strange circular USB icon in Finder

I've got a minor problem which has been irritating me for some time. Whenever my Mac has a USB storage device mounted in Finder, it shows a circle instead of the usual USB icon. I'm not sure when ...
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2answers
1k views

How to create a Windows 10 bootable USB on a Mac for PC without Bootcamp, when install.wim is too large

My Boot Camp assistant seems to be having problems (first I get not enough space, 40 GB, etc.) which I fixed by making a partition using Disk Utility, but then I didn't get an option that others seem ...
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1answer
96 views

Can you use a bootable macOS USB created on a MacBook pro, to install macOS on another MacBook Pro?

So my friend has a 2011 MacBook Pro. The laptop's hard drive crashed and no longer works. He bought a new SSD as a replacement, but he doesn't have a way to install macOS on this new SSD, because he ...
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0answers
35 views

Assign serial number to USB device

I have 2 identical USB devices (Zoom F8 multitrack field recorders) which connect as a standard audio interface. I'd like to create an aggregate device using both devices. macOS definitely "sees" both ...
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1answer
30 views

Macbook battery runs flat while “charging” with nearly full USB Brick

Road warriors buy Macbooks for untethered working and at times find themselves in a place without a powerpoint. So charging a Macbook from a USB Brick is a fundamental operational requirement. I ...
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1answer
298 views

Is there a way to get macos to recognize my external hard drive without rebooting the operating system?

I have a 4TB external drive connected to my 2015 macbook pro. It has 2 2TB partitions. I use 1 for time machine backups and the other for other files. From time to time when I plug it into the USB ...
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0answers
221 views

How can I evaluate the safety of these Magsafe 2 USB-C Charge Cables?

They look like and claim to be USB-C to Magsafe 2 cables, that allow you to charge up on the go from a USB-C wall adaptor. Link 1: https://jgotech.com/collections/usb-c-power-delivery/products/...
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0answers
20 views

How can I stop my Mac from automatically using my [input only] USB microphone as an output device?

I have a 2015 MacBook Pro on the latest version of High Sierra. I often use a USB microphone for Skype, etc. When I plug in the microphone, my Mac automatically detects it as an input source. This ...
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2answers
55 views

How do you read /dev/tty.iap on iOS? [closed]

I want to access data from a USB device attached to an iPad on that iPad. So far, I've written a basic app that detects whether files exist or not on the iPad. However, it says the /dev/tty.iap file ...
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1answer
116 views

Is is possible that a software issue could be causing spotty USB-C connections on 2017 MacBook Pro?

I have a 2017 MacBook Pro. It has 2 USB-C ports on the left side and I use an Aukey hub to provide more ports (4 USB, 1 HDMI, 1 USB-C) and always to connect two monitors. I connect one monitor ...
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2answers
400 views

Slow read/write speed (40MBps) with USB-C external SSD on Macbook Pro

I had a Sandisk Extreme Pro 500Gb PCIe NVME M.2 SSD. I got an USB-C 3.1 Gen 2 Enclosure for it. I have tried it on 3 different 2017 and 2018 macbook pros and an iMac. The Max read/write speed that I ...
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1answer
39 views

Can I install dual-boot OS on the external USB drive?

I have a MF839 MacBook with Mojave and I want to install Linux as my dual-boot system on the external USB drive. I have one USB with 8GB and one with 64GB. On 8GB I will burn my .iso file with Debian-...
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1answer
46 views

Can I plug my 15" 2017 MacBook Pro into a USB-C display while using the charger cable?

I've bought myself a Dell U2719DC display, which allows your device to charge when connected via USB C. However the maximum charging ability is capped at 65W, whereas the stock 15" MacBook Pro charger ...
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35 views

USB laptop keyboard controller for MacBook Pro keyboards?

I have an old, broken MacBook Pro 13" (non-retina) and like the keyboard. There are obviously some hacks to convert existing laptop keyboards into stand-alone USB keyboards, by using a custom-made ...