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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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Why do I see “Cannot Use Thunderbolt Accessory”?

I purchased a brand new MBP and a cable was included in the box, it has USB-C type connectors on each end and works for charging the computer. When, instead of charging with the brick, I plug it into ...
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How to use 2 FullHD monitors to one Type-C port on Macbook Pro 15 2018?

I've seen multiple questions were people are told you can't really use one port but it depends on your adapter and how you use it. I have a startech USB-C to 3 HDMI adapter: And I've been using this ...
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I cannot get audio in using Thunderbolt to Firewire

My MacBook Air recognizes my device. I have confirmed audio on the tape. I have swapped cables. The audio in works fine using Elgato to USB, but that results in some artifacts in the video. I'd like ...
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iMac doesn't see external bootable SSD on startup

I have an iMac 2013 with HDD and I recently upgraded it with extarnal SSD connected via Thunderbolt. It works pretty well but sometimes when I turn my iMac on, it shows a black screen with text like "...
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ThunderBolt 3 to Firewire 800?

I have several FireWire 800 Hard disks full of data/video/images I need for work. Last week I bought a brand new iMac and only today I realized that Apple is not selling any Thunderbolt 3 to FW800 ...
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Unable to simultaneously connect 2 monitors to Mac mini using 2 separate ports

I now have use of a Mac mini at work. I want to add a second monitor. I have one monitor setup using the Thunderbolt VGA adapter cable and that's working fine. I thought I could add a second monitor ...
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1answer
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How to diagnose slow file transfer performance?

I just bought a brand new MacBook Pro and am transferring files from a brand new external SSD hard drive. Performance is much lower than I expected. The picture is showing ~44 MBps, which has been on ...
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Does Thunderbolt 1 provide USB (3.0) functionality?

Does Thunderbolt 1 provide USB (3.0) functionality? Or in other words: Is Thunderbolt 1 compatible with USB (3.0)? I have a MacBook Pro 13'', Early 2011 (MacBookPro8,1) and a Laptop Docking Station (...
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42 views

Strong inteference from mini DisplayPort

I have a 2015 Macbook Pro 15", and when I connect the mini DisplayPort to my external monitor, the WiFi speed drops significantly (from > 100 Mbps to < 10 Mbps). I noticed that the WiFi noise level ...
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2answers
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Will the 2018 Mac mini be able to use my 2011 iMac in Target Display Mode?

I'm currently using a 2015 MacBook Pro and using a Thunderbolt cable to my 2011 27 inch iMac as the screen in Target Display Mode. I want to upgrade the MacBook Pro to a Mac mini, which has ...
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How to use late 2013 iMac in target display mode from Windows 10 ThinkPad with Thunderbolt 3 to Thunderbolt 1 Converter

I have a late 2013 iMac 27" with Thunderbolt 1 and NVIDIA GeForce GTX 780M running MacOS Mojave. I have bootcamp installed on the internal fusion drive, and I have an external TB 1 SSD with another ...
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Late imac 2013 - thunderbolt connection from mac pro 5.1 mini displayport - external monitor, possible?

I've spent hours trying to find out if it is possible to connect a 2010 mac pro to a late 2013 iMac. the iMac has two thunderbolt ports, the 5.1 mac pro I have, has an ATi card with two mini ...
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success with ASUS MB169B+ thunderbolt 2MBP?

Has anyone successfully used the ASUS MB169B+ with thunderbolt 2 Mac Book Pro? i personally have a late 2015 MBP and i see mixed reviews and explanations all over the place. i tried this before with ...
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1answer
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Mac external displays are now in the wrong order

I have a 2017 27" iMac that generally has one external display, connected to the DisplayPort port of a OWC Thunderbolt 3 Dock. This display is always connected to my mac. Occasionally I will also ...
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Is it possible to use eGPU on an external monitor and another monitor plugged right into the mac which can use internal gpu

I'm using a late 2016 15-inch Macbook Pro with a Radeon Pro 455 internal gpu, a sonnet Radeon RX 580 eGPU, and three external monitors. Because the three monitors are connected to the to the eGPU, ...
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External monitor not properly recognized on iMac pro

I have an external monitor for my iMac Pro. It is connected via an USB-C to Displayport adapter from Moshi. Unfortunately, it behaves not optimal: If the monitor is switched on while the iMac is ...
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497 views

Thunderbolt 3 to Ethernet adapter

I have just ordered one of the new Nov 2018 MacBook Airs that only come with Thunderbolt 3 (USB-C) ports. Just looking for a simple clean solution for a highly performance adapter using the USB-C ...
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1answer
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MacBook Air's Mini Display vs Thunderbolt

I can't find the right info on this, everything that I'm reading is mostly about monitors and HDMI about this topic. So my questions is... can I run an ethernet adapter for internet access through a ...
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Daisychaining adapters

I've got a Macbook pro with 2 thunderbolt ports. To one of them I've got a Mac HDMI adapter (one of these), to which I've got the power supply, an HDMI monitor, and charging my phone. To the other I'...
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72 views

Unable to get 4K @ 60Hz resolution

I have a Macbook Pro 2017 and an LG 27UD68-P UHD 4K IPS display. I recently purchased this DisplayPort to USB-C cable, but I'm still unable to get 4K resolution at 60 Hertz. The options for refresh ...
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16 views

External monitor sometimes remains black

I've got an external 4K monitor that is connected to my 2017 MacBook Pro through a KVM switch and a Thunderbolt 3 Dock. I had several issues when using the Belkin dock, so I've replaced it with a ...
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Why is Target Disk Mode so slow?

Two macs: maxed out 2017 MacBook Pro (MBP) base model iMac Pro (iMP) Using the MBP standalone, the internal drive gives me read & write speeds of about 2600 & 2000 MB/s respectively. Using ...
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1answer
104 views

Thunderbolt to Displayport Connector

I'm trying to connect a 27" iMac Thunderbolt Display to a late 2009 21.5" iMac. It's my understanding that the thunderbolt display cord (with little lightning icon on it) will not work in the mini ...
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Mac keeps restarting with kernel panic “UPSB thunderbolt power on failed”

Does anyone know what could be causing this? Happening at least daily now, sometimes multiple times :( Anonymous UUID: 9BD0D242-70AD-9DEC-BCA3-D8DCCE96A963 Sat Oct 6 09:25:04 2018 *** Panic ...
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personal experience with Thunderbolt 3 dock and dual hdmi displays

i've placed a few of these, with mixed results, with cable-matters, startech, belkin, caldigit. but i have a couple HP displays which are just messing up pretty regularly with all these docks (or i ...
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1answer
181 views

Connect an external SSD (USB Type-C) to Mac Mini (mid 2011)?

I have a Mac mini (Mid 2011) and I want to use an external SSD (Samsung Portable SSD T5) with it. Now the problem is that Mac mini (Mid 2011) only has: Thunderbolt port (up to 10 Gbps) (not ...
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1answer
35 views

Two USB-C monitors with 2016 13-inch MBP w/ 4 Thunderbolt 3 ports

I have two USB-C monitors (specifically Dell P2219HC), and I am trying to connect to them both as separate external displays. I am using the included USB-C to USB-C cable for each monitor. If I plug ...
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Is there a 1 cable solution to connect 2 monitors in extended mode and charge a MacBook 15" at the same time?

What I'm trying to find is a hub which would allow me to achieve the following: using only 1 cable to the computer (thunderbolt or USB) charge a 15" MacBook Pro (85W) at full speed use 2 external ...
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1answer
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New macpro needs to connect with thunderbolt

Getting new macpro. Have RAID external drive. I am unsure of the name of the connector but suspect it is thunderbolt not 3. I want to buy the correct connector so the data on the drive is available. ...
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220 views

Displayport to USB-C or GPU card for eGPU with Thunderbolt Output

Background: I purchased an LG Ultrafine 5k monitor per Tim Cook's recommendation. This only has a Thunderbolt-3 input. Awesome monitor, but very limited when it comes to what you can drive it with. ...
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How to connect two USB-C hdmi displays and an external drive to iMac with only two USB-C ports?

I have this 21.5 iMac but I need more displays in order to build a better workspace, so I bought a couple of USB-C AV adapters to connect the HDMi displays, but now Im using an external SSD (with usb-...
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1answer
211 views

Do all Macbooks have a Thunderbolt port?

I'm helping out with organizing a local conference, and I want all the speakers to be able to plug in their computers. While most laptops have an HDMI port, it's notably absent from a lot of Macbook ...
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1answer
2k views

2018 Macbook Pro & Dual Monitors

I'm trying to hook up dual monitors (Samsung CF390) to my MacBook Pro, but when I do, I only have the desktop image projecting on both screens. When I go into Settings > Display, the "Arrangement" ...
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Second monitor not working on startup

I have a 2017 iMac 21.5" 4K with Retina display. My Mac is connected to a second 4K monitor using a Thunderbolt 3 to DisplayPort cable. If I connect the two of them there is no problem, everything ...
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1answer
84 views

Dell P2314H Monitor Cannot Connect to Macbook Pro

I've got a late 2013 model 13 inch Macbook Pro with Retina Display, and a new Dell P2314H monitor. I keep getting a message on the monitor saying its going to sleep. I've tried the following: ...
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1answer
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Does the new Macbook Air (2017) work with Apple Cinema Display?

I'm interested in buying a MBA (2017 model), which has Thunderbolt 2 ports. Does it work without problems with an 27" LED Apple Cinema Display (with Mini DisplayPort)? Will the display have full ...
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1answer
123 views

how to prepare two SSDs after upgrade (merge to fusion drive or not, terminal commands)

I just upgraded the CPU of my 2015 27" Retina iMac and while I was in there I took out the 1TB HDD and replaced it with a 512GB Samsung 850 Pro SSD. Now I'm ready to set it all up, but I'm not sure ...
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Can I use both Macbook built-in GPUs on separate displays

My Macbook has 2 GPUs: Radeon Pro 560 4096 MB Intel HD Graphics 630 1536 MB Is there any way to use "Radeon Pro 560 4096 MB" on Apple Thunderbolt Display and the other one "Intel HD Graphics 630" ...
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1answer
44 views

Home network with wired and wifi, force local data over wired

How to connect three machines (Mini, 10.11; laptop, 10.12; iMac, 10.13) on two local networks, one wired and one WiFi, where local traffic is over wired connections and (external) Internet traffic is ...
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MBP 13" 2017 nTB external display issues when used with 2 DELL external displays

I have a MBP 13" nTB 2017 which i am intending to use with 2 DELL monitors (U2414H and U2417H) as extended desktops. However, i am facing some weird issue with the display issues shown in this video. ...
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3answers
3k views

Connecting 3 monitors to macbook pro 2018 via thunderbolt 3

I looked for 20 minutes for a post similar to mines, and couldn't find one. Which is interesting to me, because I don't understand why people want to use the display to HDMI instead of using ...
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2answers
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Application Switcher showing up on wrong monitor display

I have an early 2015 MacBook Pro running macOS Sierra. I also have two Dell UltraSharp Infinity Edge monitors connected to it via two Thunderbolt Mini DisplayPort outputs. In the System Preferences, ...
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1answer
488 views

MacBook Pro 2018 switch from sleep to DarkWake in loop. How to diagnose?

Having a lot of issues with MacBook Pro 2018 (macOS 10.13.6) connected to a single ThunderBolt 3 cable to a CalDigit TS3 docking station. When going to sleep sometimes it starts switching to ...
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36 views

Does a ThunderBolt cable increase resolution on a monitor or just frame rate? [closed]

I'm curious what does having a ThunderBolt display over others mean?
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Running two external 4k displays over thunderbolt to HDMI MacBook Pro (Retina, 15-inch, Late 2013)

I have a MacBook Pro (Retina, 15-inch, Late 2013). Can I use two 3840 x 2160 external monitors over Thunderbolt 2 to HDMI connections if the laptop is in closed-display mode? I would be perfectly ...
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1answer
178 views

Connecting 2 HDMI monitors with 2 adapters on both side of USB-C port on 2018 MacBook Pro

I am thinking of buying 2 of this adapter for my Macbook Pro 2018? By plugging the adapter from both side of the USB-C ports, can i connect it to 2 external HDMI monitors?
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Reconnect Thunderbolt programically

I have a display connected via Thunderbolt port to my MacBook Air. The cable is Thunderbolt to HDMI. Whenever I wake the computer up, it freezes intermittently, until I either reconnect Thunderbolt ...
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2answers
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Is there an adapter / Dock / hub with 2 display outputs?

Looking around I can only seem to find an adapter / dock that only has 1 hdmi output with usb,ethernet, etc. Are there any adapters / Docks that have 2 display outputs? So then I can plug it into the ...
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1answer
123 views

Maximum number of Full HD 1920x1080 displays supported on Macbook Pro 15" 2016 and later?

Is there a limit to how many Full HD 1920x1080 displays are supported on the 15" Macbook Pro 2016 and later? If a single USB-C port can currently give you up to 2 video outputs either through a TB3 ...
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1answer
3k views

Connect external display to Macbook Pro 2018: HDMI or DisplayPort?

What is the best way to connect external display (3840 x 2160, 27") to MBPro 13" 2018? It only has 4 USB-C ports, so we have to use adapters. Which is better, USB-C - HDMI or USB-C - DisplayPort? I ...