Questions tagged [thunderbolt]

High speed multifunction port (interface) designed by Intel and first manufactured on a shipping product by Apple. Thunderbolt was developed under the name Light Peak and combines PCI Express with Display Port over one serial connection.

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13 views

USB peripherals no longer work after I plug Belkin Mini Dock back in

I have a 2020 MacBook Pro 13" with this Belkin Mini Dock. Plugged in to the mini dock I have two monitors, an ethernet cord, and three USB peripherals connected (mouse, keyboard, and microphone) ...
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BenQ PD3220U with 2014 MacBook Pro Retina (USB hub question)

I want to buy the BenQ PD3220U monitor but I am not sure if I will be able to use it how I intend to. As The following post shows that I should be able to connect to the monitor from my Thunderbolt 2 ...
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Can you use a single thunderbolt port to power two extended displays in clamshell mode?

Looking at cables that split a thunderbolt port to two hdmi ports, they all say that for windows you can have monitors in ABC mode, i.e. both external monitors act as extended displays, but for Mac ...
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iMac Boot with external monitor

I have an iMac 27" 2015 with dead display. When I boot the iMac, I hear the chimes and after minutes I try to rock the volume up to hear some and play the music. It works and giving the sounds. ...
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21 views

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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21 views

Connect 3 monitors to Macbook Pro (2018) using one cable?

I want to have three external monitors connected to my Macbook Pro. I want to try keep it as neat as possible so, are there any hubs or ways I can connect three external monitors to my Macbook Pro ...
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Only two ports problem. Using iMac (Using Late 2013, 27“) as Display to connect to Macbook Pro (2019, 13”, 2 Thunderbolt 3 Ports)?

My Macbook Pro only has two USB-C ports, one of which is being used for the power cable and the other to connect an old Thunderbolt Display. I'd like to use my 2013 iMac as a second display. Any tips ...
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35 views

How to disable and reenable Thunderbolt 3 port in Mac OS Catalina?

So all of a sudden my MacBook went really slow, I contacted apple support tried everything they said, resetting nvram e.t.c, wiped out my entire disk and reinstalled the macOS, but the problem still ...
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21 views

Thunderbolt 3 dock won't output to external display

I have a 15" MBP 2019 model. I also have a StarTech Thunderbolt 3 dock with 2 Displayport outputs. I went out today and bought a cheap Philips 27" display (M7273VQ1L) to use when working ...
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34 views

MacBook Air (13-inch, 2017) [MacOs Catalina 10.15.6] Yellow tint when watching video in Netflix, Youtube or even Videos(Quick Time)

I noticed recently that when i try watching youtube videos in full screen, when i didn't move my mouse and the play bar disappeared , my screen turn yellowish. This happen only during full screen and ...
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19 views

Macbook Pro docking station - backward compatibility?

I have a 15" 2015 Macbook Pro issued to me by my workplace. I also have a 13" 2020 Macbook Pro for personal use. The 2015 has Thunderbolt 2, and the new one has Thunderbolt 3. I have a ...
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Unable to Project MacBook Pro Screen to Old iMac [duplicate]

I have a new MacBook Pro which I am not able to connect to my old iMac so I can use iMac as my secondary monitor. Details of MacBook and iMac MacBook Pro: 13-inch, 2019, Two Thunderbolt 3 ports iMac: ...
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Can I use both Thunderbolt ports to get higher resolution/framerate

I have a mid-2014 Macbook Pro (Iris Pro 1536) with an AOC U2790B. It can only run 4k at very low framerate so I downscale it. I seem to recall reading a long time ago about using both Thunderbolt ...
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16 inch MacBook Pro kernel panic when connected to LG ultrafine display

I recently purchased a used LG Ultrafine 24MD4KL-B monitor on eBay. I also got Apple's thunderbolt 3 USB-c cable. The monitor charges my laptop, so I know it has power, but the display itself will not ...
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137 views

CalDigit TS3+ dock station causes Kernel Panic (macOS 10.15.6)

I've a CalDigit TS3+ dock station with a DisplayPort external 1080p monitor, 100 baseT Ethernet, Apple USB extended keyboard (yes, wired USB keyboard) and Logitech UniFi receiver (for MX Master 2S) ...
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MacBook Pro 15: Is it normal that the discrete GPU will activate when using an eGPU?

I've been having heat problems with my MBP15 for a while when running external displays. I believe this is partly caused by the discrete AMD 555X GPU being active. In order to avoid this, I have tried ...
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111 views

Macbook Pro 16 Thunderbolt ports dead/damaged twice after used with Samsung CJ89 43" monitor with USB-C

I have a brand new 2019 MBP and I hooked it to a Samsung CJ89 43" monitor directly through USB-C. It worked for a while and then suddenly the built-in screen started flashing and then the ...
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How to check what communication mode is being used with an external monitor over the USB-C/Thunderbolt plug

If I understand correctly, if you connect an external monitor to a Mac there is more than one way the signals can be sent to the monitor. It could be HDMI, it could be USB Two-lane Displayport, it ...
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66 views

Dual 4k monitors limited to 30hz

I am currently running two Dell U2720Q 4k monitors connected to my MacBook Pro (13', 2020) via thunderbolt 3 usb-c cables. Each monitor runs at 60hz when on its own but as soon as both are connected ...
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98 views

My 13” MacBook Pro 2020 Thunderbolt port not working/charging

I bought this brand new MacBook Pro few weeks ago, now one of the two Thunderbolt ports are not working. When the MacBook starts, the battery icon is black filled with a bolt inside. The system ...
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45 views

2015 MBP (Thunderbolt 2) output to Thunderbolt 3 Dock

I have a 2015 MBP (Thunderbolt 2), and I want to output to a new Thunderbolt 3 docking station. The new dock is connected to 2 monitors. Seems like what I need is a male to male Thunderbolt2 to ...
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19 views

iMac mid 2011 reboots when connecting an external display

I'm new to apple, and finally got my second hand iMac booted. I try to connect an external display to the iMac with an mini display port adapter. I have 2 adapters, 1 does nothing, the other makes my ...
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83 views

Macbook Pro: One USB-C port only works for charging devices

Is this possible: I have two USB-C ports on my MacBook Pro 2019. One port works perfectly well. The other is odd to say the least. After some testing, it seems as if the port "can't handle ...
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87 views

My 2014 MacBook Pro is not able run external monitor at high refreshrate

I recently bought a Acer 2K 144Hz monitor to pair with my 2013 Retina MacBook pro. I am connecting the monitor to the MBP via Thunderbolt port to DisplayPort cable. As far as I know, my MBP should ...
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23 views

External Thunderbolt Display HiDPI resolution (Retina)

I have a MacBookPro running Catalina with an external Apple Thunderbolt Display. I have connected to it using a Thunderbolt 3 (USB-C) to Thunderbolt 2 adapter. When the lid of the MacBookPro is open, ...
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68 views

How do I prevent kernel panics and failures on my MacBook with a Thunderbolt display connected?

My MacBook Pro (15-inch, 2017) running macOS Catalina 10.15.6 (19G73) will inevitably kernel panic while in sleep mode when my external display (LG Ultrawide 34UC98-W) is connected via an Apple ...
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27 views

How to use iMac (27-inch, Late 2013) as a second monitor for Macbook Pro (13-inch, 2020)? [duplicate]

I bought Thunderbolt 3 (USB-c) to Thunderbolt 2 by Apple and Thunderbolt Cable (0,5m). Cmd+F2 doesn't work for me. I guess it's just because Apple now prevents to use old iMacs as monitor with new ...
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60 views

Ethernet adapters conversion from MacBook Air (Mid 2012, 13“) to MacBook Pro (Late 2019, 16”)

So I've just bought the latest MacBook Pro (late 2019, 16") and bumped into the common issue of not finding 1 piece of Ethernet adapter. I want to use only Apple made adapters, so I'm left with ...
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133 views

Mac mini 2014 4k + 2k Monitor Configuration

I'm interested in getting a Mac mini Late-2014 (specifically A1347, Macmini7,1, MGEN2LL/A), but I'm concerned by the multi-monitor specifications published by Apple. The specs state:- Video Support ...
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53 views

Will one USB-C port be able to deliver power, data transfer and power two monitors on a Macbook Pro?

I have a USB-C hub (link to it on amazon is here). At the moment I have a setup of: Mouse and keyboard, hard drives, power cable and one monitor through HDMI into that USB-C hub and have had no ...
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31 views

Link Displays Between Two iMacs (Late-2015 Retina running Sierra and 2017 running Mojave) Using Thunderbolt-to-Thunderbolt

I'm hoping someone can help me (and that this is possible, considering I just spent an arm and a leg to facilitate this setup). I have a late-2015 iMac (27" Retina 5K display, running Sierra) and ...
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45 views

Thunderbolt cable that only works as USB 3.1

I have an LG 5k Ultrafine screen which does not work when connected to my Macbook Pro 2018. Before thinking that the screen may not be working, it could be that the cable which isn't working. In order ...
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33 views

Turn off power to Thunderbolt device while leaving data connection

As per the title, is it possible to do this? I have two devices using Thunderbolt 2 ports on a macbook pro. One, an audio interface, makes the area around the port excessively hot to touch and can ...
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Connecting and using two external monitorson MacBook Pro early 2015

I have been using an LG 5K monitor hooked up to my MacBook Pro via one Thunderbolt 2 on one female connection for quite a while. I tried to hook up an AOC E2752S via HDMI to Thunderbolt 2 to the ...
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42 views

Target Display Mode using 2019 MBP and 2012 iMAC

I currently have: 2019 MBP on MacOS 10.14.6 2012 iMAC on MacOS 10.14.6 (thunderbolt 2) I am connecting them to each other using a Thunderbolt 2 to Thunderbolt 3 adapter, both of which are brand new....
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191 views

Late 2012 iMac - Thunderbolt : no hardware was found

I have an Late 2012 27" iMac (iMac13,2) and somehow when looking in system report for the Thunderbolt ports say "no hardware was found.” I have tried: Endless searching to find a solution Resetting ...
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1k views

Target Display Mode not working on MacBook Pro 13" 2020

I am using a 2011 iMac as an external monitor (and speakers) for my MacBook Pro (2014) on a daily basis. Last week, I upgraded to the 2020 MBP 13". The new MBPs with USB-C are supposed to work with ...
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37 views

Macbook Pro: Battery draining and CPU throttling or overheating with OWC dock

Yesterday my 2018 15" MBP slowed to a crawl near the end of the workday. I use it with an OWC Thunderbolt 3 dock, which is driving two monitors, an ethernet connection, and a USB hub. My biggest CPU ...
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176 views

External iSight Camera microphone not working

I'm using a 2003-era external iSight Camera with an Apple Cinema Display and USB-C MacBook Pro running macOS 10.15. It's connected via a long succession of dongles: iSight > FireWire 400 > ...
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Will daisy chaining 2 thunderbolt monitors work on current 16" macbook pro?

My job is replacing my old mid-2015 15" retina macbook pro with a newer 16" macbook pro (not sure about the specific specs). I currently have 2 LG pure thunderbolt monitors (27MB85Z-B) that I daisy ...
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80 views

MBP Mini-DisplayPort to USB-C Monitor

I have an "old" MacBook Pro (MBP) that has a Mini-DisplayPort connector. I have a newer MBP with 4 USB-C connectors that I use with an LG UltraFine 5K Monitor (aka. LG 27MD5KA-B). I wanted to know ...
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14 views

Using Late 2015 13“ MacBook Pro as a 2nd monitor for Late 2015 27” iMac

I have a Late 2015 13" MacBook Pro (HDMI, Thunderbolt 2, and USB 3) that I want to use as a 2nd monitor for my Late 2015 iMac (Thunderbolt 3 aka USB-C and USB 3). What is the cheapest/best cable ...
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44 views

Thunderbolt 3 - Not delivering power when Macbook sleeps

I'm using CalDigit TS3 Plus Thunderbolt 3 dock with a 13" 2020 MacBook Pro. Everything is working nicely, except that when the Macbook goes to sleep, the dock does too, and I can't wake the Mac using ...
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14 views

max resolution for external monitor with iMac 5K [duplicate]

I was just about to get a LG 49WL95C-W (5120 x 1440) for my iMac Retina 5K, 27-inch 2017, (either with a USB-C Thunderbolt 3 or USB-C to DisplayPort) but I was told the iMac might not be able to ...
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69 views

2018 Mac mini random restart problem

Over the past couple of days, my 2018 Mac mini has been randomly restarting/shutting down after I’ve stopped using it. When I power up my Mac mini, it says that it’s been restarted because of a ...
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37 views

Use an iMac with Thunderbolt as an external display [duplicate]

I can't manage to connect my iMac (Retina 5K, 27-inch, 2017) Display with my MacBook Pro (15-inch, 2018). I have an Apple Thunderbolt 3 USB-C cable, both computer are on (logged with an admin user), ...
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16 views

Connect Early 2015 Macbook pro to TWO HDMI monitors via Thunderbolt or USB

I have two free thunderbolt ports on my MacBook, and would ideally like to connect to two external HDMI monitors and have the macbook screen active as well. I would like to extend the desktop and not ...
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27 views

External Display not displaying full OSD function tech said solution is HDMI Adapter?

I would like to start off saying I have 0 tech knowledge and this staying at home period has forced me to learn alot! So recently I bought a new 4k monitor to upgrade my work at home experience. ...
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33 views

Dell USB-C Monitor (U2520D) connection to an iMac (Retina 5K, 27-inch, 2017)

There are many options and cable types that I am mighty confused about the best way to connect the Dell as a second monitor to my iMac. I would like the Dell to wake up when the iMac wakes up and I ...
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22 views

Macbook Pro not waking up on click (external monitor and thunderbolt dock)

Model Identifier: MacBookPro11,4 System Version: macOS 10.15.4 (19E287) Retina, 15-inch, Mid 2015 I have a macbook pro plugged into an external monitor via a thunderbolt dock (I believe this one). ...

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