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38 votes
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How to charge MacBook Pro quickly from an iMac?

This cable costs $39 retail. At this price I am expecting better performance for charging than what I'm getting here. How could I diagnose this issue? There's nothing to diagnose because ...
Allan's user avatar
  • 103k
33 votes
Accepted

Should I use a Thunderbolt adapter or a USB 3.0 adapter for ethernet?

SHORT ANSWER The answer to your question as asked in the title is it really depends on what ports you have available, personal preference, cost, etc. I say this because both USB 3.0 and Thunderbolt ...
Monomeeth's user avatar
  • 64.7k
32 votes

Is Thunderbolt 2 to Thunderbolt 3 (type C) possible?

Let's break your question into two questions. Can I use the ASUS MB169B+ with a Thunderbolt 1/2 Mac? Is there a generic way to connect any arbitrary Thunderbolt 3 or USB Type C peripheral to a ...
nldesi's user avatar
  • 329
23 votes

Connecting 3 monitors to macbook pro 2018 via thunderbolt 3

For anyone trying to do this using a dock that has multiple display outputs, the MacBook Pro 2018 only has two thunderbolt busses, but 4 ports (2 ports per bus), as a result, if you try to connect ...
Ecksters's user avatar
  • 331
22 votes
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Using a USB-C dock with older MacBook Pros

(Assuming you mean to say that you have a MacBook Pro and not a MacBook because there is no MacBook that was made in 2014.) You aren't going to find a Thunderbolt 2 to USB-C adapter as it makes no ...
Allan's user avatar
  • 103k
17 votes

Mac keeps restarting with kernel panic "UPSB thunderbolt power on failed"

I had this issue with a new MacBook Pro 2019/20 16-inch Catalina 10.15.4 (19E287) It would frequently crash on sleep or when the screen was locked with the same error "thunderbolt power on failed" ...
David Thomas's user avatar
  • 1,426
16 votes
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How to change resolution of external monitor from main monitor on Macbook Pro?

Try clicking on 'Gather Windows' button in the bottom right corner. It will bring the resolution choices onto the built-in screen. Then you can choose one that suits. If you hold down option while ...
Mitch's user avatar
  • 176
15 votes
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How to use 2 FullHD monitors to one Type-C port on Macbook Pro 15 2018?

The Startech adapter you've got works as a MST (Multi-Stream Transport) hub. MST is a part of the DisplayPort 1.2 standard, which makes it possible for monitors and computers to support "daisy-...
jksoegaard's user avatar
  • 78.3k
14 votes

Can I do 4K@60hz with my early 2015 MacBook Pro Retina?

I have a similar device (Early 2015 rMBP with 16 GB running macOS Sierra 10.12.6) and can confirm that it will power an external 4K display at 60 Hz - it's supposed to power two external displays at ...
TheValK's user avatar
  • 141
13 votes
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MacBook Air occasionally freezes when external monitor is connected

More than likely, the issue is, in fact, your Mini DP to HDMI adapter. The AmazonBasics Mini DisplayPort to HDMI Adapter adapter that you listed is a passive adapter (notice nowhere do they say &...
Allan's user avatar
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13 votes
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Connecting 3 monitors to macbook pro 2018 via thunderbolt 3

I currently use 3 4k displays (Dell P2715Q) on a MacBook Pro 15" 2017 (GPU: Radeon Pro 560 4096 MB). Two monitors are connected to the right side ports/bus and the third one (plus a dock for ...
Gustavo Bezerra's user avatar
12 votes

Primary display randomly changes

This worked for me, credit to this answer: https://superuser.com/a/1220526/454133 Play around with moving the "top" bar between screens in the Arrangement window. Assign it to different screens ...
ognockocaten's user avatar
12 votes

Should I use a Thunderbolt adapter or a USB 3.0 adapter for ethernet?

I would recommend Thunderbolt, as it is essentially external PCI-Express, which is the same bus an internal network card (among other things like graphics cards, etc) is attached to. PCI-E (and thus ...
André Borie's user avatar
12 votes

Only one USB-C port will charge my MacBook Pro?

So, to summarize, the port works for all functions (USB connectivity, display, etc) including charging downstream devices (like a smartphone), but you cannot charge the MacBook. Your SMC chip needs ...
Allan's user avatar
  • 103k
12 votes
Accepted

Application Switcher showing up on wrong monitor display

The application switcher appears on the display where the Menu Bar is placed (the primary display). However, if you have enabled Automatically hide and show the Dock in System Preferences → Dock, the ...
Nimesh Neema's user avatar
  • 52.2k
11 votes

Should I use a Thunderbolt adapter or a USB 3.0 adapter for ethernet?

An answer from my personal experience: I've used both original Apple's Thunderbolt to Gigabit Ethernet adapter Cable Matters DB50 USB 3.0 to Gigabit Ethernet adapter and noticed no difference when ...
Kuba Wyrostek's user avatar
11 votes

What are the requirements to use iMac screen as a second monitor - Target Display Mode?

No. You cannot do this. The 2019 iMac is not supported for Target Display Mode. This is an attempt to write a canonical QA for this issue, as per the Meta post: Where is the list of canonical ...
Allan's user avatar
  • 103k
10 votes

Primary display randomly changes

The free terminal tool I wrote, displayplacer, allows you to configure the "white bar" primary display via scripts/hotkeys. Configure your screens how you like, drag the "white bar" to your primary ...
Jake Hilborn's user avatar
  • 1,496
10 votes
Accepted

Can one MacBook charge another over USB-C?

Yes you can. I finally figured out how. Use a dongle and hook them up like this: power supply > usb-c cable > mbp > usb-c cable > usb-c multi-port dongle > mbp2 I've tested it with ...
Jared Menard's user avatar
10 votes
Accepted

What makes Thunderbolt 2 adapter more expensive than TB 3 or USB-C?

Thunderbolt is expensive because of two reasons: Licensing fees required by Intel (initially co-developed with Apple but Intel gained all rights in 2012) Technical requirement of having a Thunderbolt ...
Allan's user avatar
  • 103k
10 votes
Accepted

How do I Propery Configure Display Scaling on macOS (with a 1440p External Display) to Reduce Eye Strain?

The solution requires SwitchResX and to follow this guide - How to Mimic a 2K Monitor as “Retina Display” in macOS Sierra Using HiDPI. The high level steps: Install SwitchResX. Disable SIP. Create a ...
Axemasta's user avatar
  • 289
9 votes

What is the fastest external storage supported on Intel 2020 27" iMac?

There are three things which effect compatibility and performance when connecting external storage: The physical connector and cable. The 2020 iMac has four USB Type A (USB-A) and two USB Type C (USB-...
Gilby's user avatar
  • 11.3k
8 votes

CPU usage is too high with Yosemite and an external monitor

My question was marked as a duplicate of this one but has a solution to this issue verified by many users. rMBP kernel_task spikes when connecting more than one external monitor :)
vaughan's user avatar
  • 1,691
8 votes

CPU usage is too high with Yosemite and an external monitor

I have a MacBook Pro Retina, 15-inch, Late 2013 2.3 GHz Intel Core i7 16 GB 1600 MHz DDR3 NVIDIA GeForce GT 750M 2048 MB Intel Iris Pro 1536 MB With an external Sceptre X325BV monitor connected via ...
Mark's user avatar
  • 81
8 votes

External monitors show blank screen until restart

The video signal on the Thunderbolt connection on your MBP is actually Display Port so you are actually going from Display Port to HDMI. I am not a fan of converting signals because it's flaky at ...
Allan's user avatar
  • 103k
8 votes

Thunderbolt 3 dock disconnects when MacBook sleeps

Given that the computer sleep seems to be the problem, I turned off the "Power Nap", and it seems to be working for me now. System Preferences > Energy Saver Power Adapter tab Uncheck &...
Jim Leask's user avatar
  • 193
8 votes

Connecting 3 monitors to macbook pro 2018 via thunderbolt 3

From the MacBook Pro Technical Specs page: Simultaneously supports full native resolution on the built-in display at millions of colors and: Up to two displays with 5120-by-2880 resolution at ...
Nimesh Neema's user avatar
  • 52.2k
8 votes

How to charge MacBook Pro quickly from an iMac?

According to Apple the best way to charge your MacBook Pro is with the included AC adapter. They don't mention plugging into an iMac specifically, but based on your report of a long predicted charging ...
dwightk's user avatar
  • 7,639
7 votes

How do I reset/clear my external display settings in 10.9?

Neither of the above two answers has solved the problem. Maybe I can move the ball forward a couple of inches ... I, too, clicked on the wrong resolution for my external monitor and now I can only use ...
August's user avatar
  • 505
7 votes

Does Apple support DDC/CI for 3rd party displays via Apple's Thunderbolt to DVI adapter

It's an old topic, but I'll still post it here, just in case. I'm not sure about specific details of TB-to-DVI adapter, but in general you CAN control quite a lot of monitors. There's a great little ...
FrytechTV's user avatar

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