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Willhom 922-9941 All-in-One Cable Replacement for Thunderbolt Display 27" A1407 Mid 2011 (MC914LL/A)

3.8 3.8 out of 5 stars 119 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Brand Willhom
Connector Type DisplayPort
Connector Gender Male-to-Male
Shape Round
Unit Count 1.0 Count

About this item

  • All-in-one cable (Thunderbolt, dc-in board, mini DisplayPort, and 2 pin PCIe connectors) included.
  • Thunderbolt Display All-in-One Cable 27" A1407 (Mid 2011) 922-9941
  • Multitasking at its finest.
  • Compatible for Thunderbolt Display 27" A1407 Mid 2011 ( MC914LL/A ) only , ( Not compatible for Cinema Display 27" A1316 )
  • Part Number: 922-9941

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$14.24

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 7.9 x 5.2 x 1.5 inches; 4.8 ounces
  • Item model number ‏ : ‎ 922-9941
  • Date First Available ‏ : ‎ January 17, 2017
  • Manufacturer ‏ : ‎ willhom
  • ASIN ‏ : ‎ B01NCVGPIR
  • Customer Reviews:
    3.8 3.8 out of 5 stars 119 ratings

Product Description

WHAT'S INCLUDED

  • All-in-one cable
  • Has Thunderbolt, MagSafe, Mini DisplayPort, and 2 pin PCIe connectors
  • Multitasking at its finest.

Compatible for Thunderbolt Display 27" A1407

  • Thunderbolt Display Mid 2011: MC914LL/A

Identifying Numbers

  • Part Number: 922-9941

Extremely Important

  • Ensure that your original part number matches this exactly and install it very professionally, if not, do not try.
  • Please remember remove the protective cover when install.
  • You will receive a 100% compatible Thunderbolt Display Cable .The exact brand,part number and package of the Thunderbolt Display Cable you will receive is determined by market availability.

922-9941

Troubleshoot

Troubleshoot step 1

Disconnect the Thunderbolt display cable from the host computer. Leave it aside.

Troubleshoot step 2

Connect a known good Thunderbolt peripheral cable (male-male) to the Thunderbolt port on the back bottom edge of the display (next to the FireWire 800 and USB 2 ports). Connect the other end to the host computer. Power on both the Thunderbolt Display and host computer.

Troubleshoot step 3

If the display acts as expected (shows a good solid display), replace the thunderbolt cable that is attached to the back of the display .A1407 Thunderbolt Display All-In-One Cable for Apple 27" 922-9941

Scrambled Display, No Display, intermittent display

  • When the Thunderbolt display is attached to the host Mac, display is distorted, or non existent.
  • Unplugging and replugging the display gives varying results
  • It's possible that the cable has become crimped, cut, worn, or the display connector is defective.
  • Evaluate the condition of the attached cable and connector.

TIPS

Taking the display off

Remove the fan

Detach the logic board

Taking the display off

  • Slowly lift the LCD out from its placement and tilt it upwards.
  • There are four wires that connect the LCD to the rest of the components. Make sure not to pull hard and break any of the wires.

Disconnect the fan

  • The fan is easily removed simply by detaching a couple of connectors and unfastening a few screws.
  • Chosen to go with a large, brushless fan to keep the colossal Thunderbolt Display nice and cool.

Taking the rest of the cables off and the board.

  • In our pursuit of self-preservation, we begin by disconnecting the power supply connector from its socket on the logic board to prevent any electrifying experiences.
  • A few more T10 Torx screws bite the dust at the hand of our bit driver kit, and the logic board is detached.

TIPS

stop connector

stop connector

stop connector

Stop—it's connector time!

  • We remove a plethora (that's right, plethora, we're using our five dollar words) of connectors from the logic board, leaving only the brains behind the Thunderbolt port between us and the display's control center.

Disconnect the Thunderbolt cable

  • A few T6 Torx screws are knocked out to remove the connector cover, and the Thunderbolt cable is disconnected.

Replace with the new cable

  • Interestingly enough, the Thunderbolt cable that routes into the display also plugs into a standard Thunderbolt socket on the logic board. Apple could have just soldered the cable wires to the board, but instead chose to implement a cover that prevents the cable from being detached from the logic board's Thunderbolt socket.
  • You'll still have the Thunderbolt cable on the back side to disconnect which is quite easy! Then work on removing the cable from the displays body and replace it with the new cable.
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Customer reviews

3.8 out of 5 stars
3.8 out of 5
119 global ratings

Customers say

Customers like the ease of installation with the product. They mention the instructions are pretty good. However, some customers have reported issues with flickering and image delivery. They say the screen starts to go on and off every 2-3 minutes. They also say the Thunderbolt connection is not working and the connector is a bit wonky. Customers have mixed opinions on performance.

AI-generated from the text of customer reviews

5 customers mention5 positive0 negative

Customers find the installation of the electronic cable to be easy. They mention that the instructions are pretty good and the cable works great. They also mention that repair is easy, with videos on Youtube.

"Installation went perfectly, and the instructions here are pretty good...." Read more

"...These definitely look like OEM cables, and installation is pretty straightforward if you follow the iFixit instructions, but I wasn't thrilled to..." Read more

"Cable works great! The repair was easy too - there are videos on youtube and elsewhere on the web to do it...." Read more

"If you have the courage, it is actually quite easy to install..." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the fit of the electronic cable. They mention that it works exactly like the original and fits their thunderbolt display perfectly.

"Fits, works exactly like the original." Read more

"Cable was a good fit. Unfortunately it wasn’t our issue, so couldn’t tell if it works or not." Read more

"Perfectly fit to thunderbolt display." Read more

27 customers mention16 positive11 negative

Customers are mixed about the performance of the cable. Some mention it works perfectly so far, while others say it's nonfunctional and fails almost immediately after use.

"...I ordered this cable and swapped it out in about 5 minutes. It works perfectly now...." Read more

"...took me 2 hours to replace it, put the display back together, find out it didn't work and then have to repeat the process to put the old one back in...." Read more

"The first one of these cables I got worked fine for the video portion, but the monitor's USB system, which includes the webcam, speakers, and USB..." Read more

"...Cable works great. I can't tell any difference between this and the original...." Read more

5 customers mention0 positive5 negative

Customers are dissatisfied with the flicker of the electronic cable. They mention that the screen starts to flicker, the monitor flashes in bursts, and the connection is not working.

"...Monitor flashes in bursts. Started with just 1, now it's anywhere from 1 to 5 in a row then it's ok for a minute or two then it's back...." Read more

"...about a month ago (flickering once in a while), and lately it started flickering and loosing a picture every few seconds...." Read more

"...It worked perfect for 2 weeks and suddenly my screen started to flicker and it’s now getting worse." Read more

"It works for 2 days then my screen start going on and off every 2-3 min. Not sure what to do, I’ve already trashed the old (original) one" Read more

5 customers mention0 positive5 negative

Customers are dissatisfied with the image delivery of the cable. They mention that the video connection has been degrading throughout the day, the power did work for each cable, but the Thunderbolt connection did not for either cable. The Thunderbold connector was a bit wonky and sometimes the signal to the monitor would drop.

"...and the only thing I could see wrong with it was that thunderbolt connector was a bit wonky and sometimes the signal to the monitor would drop...." Read more

"...Update 12 hours later: The video connection has been degrading throughout the day. Monitor flashes in bursts...." Read more

"...and although the power did work for each, the Thunderbolt video didn't for either cable...." Read more

"...No power delivery via Magsafe connector, no image delivery via thunderbolt. Re-installed old worn connectors and all works...." Read more

If you have the courage, it is actually quite easy to install
5 Stars
If you have the courage, it is actually quite easy to install
I dropped my laptop and it bent the Thunderbolt connector on my display. I thought I was screwed and likely facing a $300-400 repair job. I decided to check Amazon on the off chance someone sold this OEM replacement cable. There are other versions but NONE of the white stopper that plugs into the back of the monitor to keep tension off. Don't but the cheap one to save $4 - GET THIS OEM ONE. I found ONE video on YouTube about installing the cable. Oddly the video was put together by an Irish guy who sheers sheep or something. Go figure. Anyway he does a decent job explaining the process EXCEPT he leaves out how to disconnect the 3 small ribbon cables connected between the LCD and the logic boards. All I can tell you is that the come out quite easily. The larger one has a pull tab for removal, the two smaller ones click out. The only challenge is you have about 3-4 inches to slip your hand in and disconnect the ribbon cables.There are 20+ total screws you'll be taking off. You need a set of jeweler TORX drivers, these are tiny and there are 2 different sizes.My last tip has to do with the thunderbolt connector inside the monitor. You must remove the metal plate covering that connector before you can disconnect that cable. That metal plate is actually locking the cable in place, don't try to manhandle it like I did, you'll lose.You may need a suction cup to pull the glass away to get started. The sheep guy used his fingers, I used a small suction cup. The front glass is held on by ridiculously strong magnets, that's it. Just find your grip and work the edges and get it to pull away. Good luck.Skill wise I say this is a 3 out of 5. It takes more nerves than actually skill :)
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Top reviews from the United States

John
5.0 out of 5 stars Worked like a charm
Reviewed in the United States on July 12, 2020
Verified Purchase
My work was throwing away an Apple monitor because "it didn't work". I brought it home and the only thing I could see wrong with it was that thunderbolt connector was a bit wonky and sometimes the signal to the monitor would drop. I ordered this cable and swapped it out in about 5 minutes. It works perfectly now. I also got an adapter to convert the power plug to magsafe 2 so I was able to reduce the clutter on my desk.
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Jake
1.0 out of 5 stars Fails almost immediately after use.
Reviewed in the United States on November 11, 2018
Verified Purchase
Installation went perfectly, and the instructions here are pretty good. However, over the first 5-10 minutes of usage, the magsafe/power gradually got less and less reliable, until completely failing. Sucks... There is picture on the screen though, you just would have to use another power adapter for the laptop (which is what I'm doing until a new part gets in).

The bad reviews are true for this one, try to find an OEM part since this thing is crap. You get what you pay for.

-------------------------
Update 12 hours later: The video connection has been degrading throughout the day. Monitor flashes in bursts. Started with just 1, now it's anywhere from 1 to 5 in a row then it's ok for a minute or two then it's back.

This thing is a complete piece of garbage. Seriously, don't waste your time. I'm not sure which 3rd party versions of this part don't suck, but definitely don't get this one. Defective to the core - it's going back.
3 people found this helpful
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TeacherTeacher
5.0 out of 5 stars If you have the courage, it is actually quite easy to install
Reviewed in the United States on February 8, 2020
Verified Purchase
I dropped my laptop and it bent the Thunderbolt connector on my display. I thought I was screwed and likely facing a $300-400 repair job. I decided to check Amazon on the off chance someone sold this OEM replacement cable. There are other versions but NONE of the white stopper that plugs into the back of the monitor to keep tension off. Don't but the cheap one to save $4 - GET THIS OEM ONE. I found ONE video on YouTube about installing the cable. Oddly the video was put together by an Irish guy who sheers sheep or something. Go figure. Anyway he does a decent job explaining the process EXCEPT he leaves out how to disconnect the 3 small ribbon cables connected between the LCD and the logic boards. All I can tell you is that the come out quite easily. The larger one has a pull tab for removal, the two smaller ones click out. The only challenge is you have about 3-4 inches to slip your hand in and disconnect the ribbon cables.

There are 20+ total screws you'll be taking off. You need a set of jeweler TORX drivers, these are tiny and there are 2 different sizes.

My last tip has to do with the thunderbolt connector inside the monitor. You must remove the metal plate covering that connector before you can disconnect that cable. That metal plate is actually locking the cable in place, don't try to manhandle it like I did, you'll lose.

You may need a suction cup to pull the glass away to get started. The sheep guy used his fingers, I used a small suction cup. The front glass is held on by ridiculously strong magnets, that's it. Just find your grip and work the edges and get it to pull away. Good luck.

Skill wise I say this is a 3 out of 5. It takes more nerves than actually skill :)
Customer image
TeacherTeacher
5.0 out of 5 stars If you have the courage, it is actually quite easy to install
Reviewed in the United States on February 8, 2020
I dropped my laptop and it bent the Thunderbolt connector on my display. I thought I was screwed and likely facing a $300-400 repair job. I decided to check Amazon on the off chance someone sold this OEM replacement cable. There are other versions but NONE of the white stopper that plugs into the back of the monitor to keep tension off. Don't but the cheap one to save $4 - GET THIS OEM ONE. I found ONE video on YouTube about installing the cable. Oddly the video was put together by an Irish guy who sheers sheep or something. Go figure. Anyway he does a decent job explaining the process EXCEPT he leaves out how to disconnect the 3 small ribbon cables connected between the LCD and the logic boards. All I can tell you is that the come out quite easily. The larger one has a pull tab for removal, the two smaller ones click out. The only challenge is you have about 3-4 inches to slip your hand in and disconnect the ribbon cables.

There are 20+ total screws you'll be taking off. You need a set of jeweler TORX drivers, these are tiny and there are 2 different sizes.

My last tip has to do with the thunderbolt connector inside the monitor. You must remove the metal plate covering that connector before you can disconnect that cable. That metal plate is actually locking the cable in place, don't try to manhandle it like I did, you'll lose.

You may need a suction cup to pull the glass away to get started. The sheep guy used his fingers, I used a small suction cup. The front glass is held on by ridiculously strong magnets, that's it. Just find your grip and work the edges and get it to pull away. Good luck.

Skill wise I say this is a 3 out of 5. It takes more nerves than actually skill :)
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6 people found this helpful
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Riverman
4.0 out of 5 stars Great Cable If You Get a Good One
Reviewed in the United States on December 19, 2020
Verified Purchase
The first one of these cables I got worked fine for the video portion, but the monitor's USB system, which includes the webcam, speakers, and USB ports, would drop out about every 30 minutes. I'd have to unplug the monitor and plug it back in to get USB to work. I ordered a second one, and that one works perfectly. These definitely look like OEM cables, and installation is pretty straightforward if you follow the iFixit instructions, but I wasn't thrilled to have to do the job twice. I would have given it 5 stars if the first cable had worked like it should.
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Khon Lieu
5.0 out of 5 stars Apparently it worked! (DON'T BUY YET - TRY THIS FIRST)
Reviewed in the United States on September 4, 2020
Verified Purchase
UPDATE:
I realized the reason my old cable didn't work was b/c I was plugging it in upside down! I guess over time my laptop thunderbolt got worn out so I was able to push in the thunderbolt upside down.. So before you buy thinking your cable is bad, try turning it over and plugging it in again!

I had no idea why my monitor was no longer working when I plugged it in. I saw some YouTube video of some guy changing it and thought I'd give it a try. Amazingly it worked. I doubted it since nothing looked wrong w/ my old cable, but I tried anyways. I was quite sure it was the main circuit board since I used my multi-meter to ensure that the power supply was working, which it was. I'll report back if I see any issues as some other reviewers mentioned.
One person found this helpful
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Dmitry Shkeirov
3.0 out of 5 stars Failed after less than a year.
Reviewed in the United States on June 8, 2021
Verified Purchase
Replaced failed original cable in October 2020 with this one, on a 5 year old Thunderbolt Display.
It started failing about a month ago (flickering once in a while), and lately it started flickering and loosing a picture every few seconds.
The failing point is the ThunderBolt connector on the cable itself, as it was connected to a Mac Mini and the cable was virtually stayed static since then, so it is not a wires breakage issue but the connector as mentioned (maybe due to constant heat from the Mac Mini exhaust fan). If I disconnect the ThunderBolt cable and let it cool down, and later connect it back it works fine till it gets hot again.

Unfortunately, I assume that another replacement cable will fail in exactly same way after some period of time...
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C.D.C.
5.0 out of 5 stars Works great, seems to be a perfect match / looks like an Apple product.
Reviewed in the United States on January 29, 2019
Verified Purchase
I was wasn't sure a $20 cable could fix my favorite monitor, but with the frayed wires finally shorting out and nothing else quite as good as the classic Thunderbolt monitor for my needs I took a stab at it. You will also need a mini-Phillips head screwdriver, a torx - 10 and a torx - 6.
I have never worked on an Apple product before, but after watching a few videos I made the leap, ordered, and took a stab at it. 2 hours later, including a 20 min break to get a a set of torx heads at the hardware store ($7) I have my old monitor back in top shape.
2 people found this helpful
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BENJAMIN S LARSON
1.0 out of 5 stars Like others the cable didn't deliver power through the power ...
Reviewed in the United States on July 6, 2018
Verified Purchase
Like others the cable didn't deliver power through the power cable. The display connection worked fine. I put the old cable on, and the power worked fine. The new cable shipped to me was defective. I wouldn't have been too bothered except for the fact that it took me 2 hours to replace it, put the display back together, find out it didn't work and then have to repeat the process to put the old one back in. Now I'm back to where I was before, with a fraying original cable.
One person found this helpful
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Top reviews from other countries

Amazon Customer
5.0 out of 5 stars So far, so good
Reviewed in Canada on December 9, 2020
Verified Purchase
This item arrived in good time and I recently had it installed in my Thunderbolt monitor. It's working well so far, replacing the 8-yr old cable that had split over time. I found the price a little high for what it is (plus the cost of installing it) but it was less expensive than another monitor. All good.
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D L
1.0 out of 5 stars Crap quality
Reviewed in Singapore on May 30, 2021
Verified Purchase
The media could not be loaded.
 I spent 1 hour troubleshooting this, thinking I installed it wrongly, but that's not the case. The thunderbolt cable works fine, but the power cable was wired wrongly obviously (see 1st video). It should perform such that one polarity is on the outside pins and another polarity is on the inside pins
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KK
5.0 out of 5 stars Works perfect
Reviewed in Canada on August 10, 2020
Verified Purchase
The cable works perfectly. Any chance this will get restock? Would like to purchase another one. Thanks.
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Tony
5.0 out of 5 stars Good quality
Reviewed in Canada on April 6, 2021
Verified Purchase
Good quality and simple to install
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Terence
5.0 out of 5 stars Exactly as the original!
Reviewed in Canada on February 19, 2020
Verified Purchase
Perfect!! Exactly like the original! Works a charm!
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