Connection issues: LED Cinema Display 24" (2008) + MacBook pro (2019)

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Level 1

8 points

Connection issues: LED Cinema Display 24" (2008) + MacBook pro (2019)

Hello, (Have tried Apple Support and viewed comments.)

I can mirror and work off the Display with the Pro, but the peripherals hooked up to the Cinema Display USB ports aren't recognized and there is no power going to them.

USB C to Mini Display port adapter - goes from 24" Display cable / adapter / Macbook Pro

https://www.amazon.com/gp/product/B086G9YH41/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

Macbook Pro - plugged into own power supply

Display 24" - plugged into own power supply

MacBook Pro - readable/write on Display

MacBook Pro - External Hd Drive (thunderbolt) is readable on Display

USB ports on back of 24" Display -

2 External Hd Drive USB - plugged into USB ports on back of Display are not readable (no power)

iPhone USB Cable - plugged into USB port on back of Display has no power

Thanks All

MacBook

Posted on Jun 8, 2020 5:16 PM

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Answer 1

zngbm200 Author

Level 1

8 points

Jun 9, 2020 1:52 PM in response to Malcolm J. Rayfield

Malcolm,

Thank you for solving my problem. I now understand the reason why two adapters are required!

Thank you for additionally solving my multiple charging activities. That's a great use of the mag safe cable on the Display.

Given the 3 ports these 3 adapters take up - do you have any recommendations for either a) a multi port adapter that would work here, or b) a Dock? The web recommended this by Dell, but it's much more expensive than 3 adapters and I'm not certain it's right.

https://www.amazon.com/gp/product/B01C8PHWQY/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B01C8PHWQY&linkCode=as2&tag=arikatect-20&linkId=354a63592c964556488ef3f0a4d471ff

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Answer 2

Jun 9, 2020 7:33 PM in response to zngbm200

If you are want a dock, get one that connects to the computer via Thunderbolt 3, not just USB-C. For example, the USB dock you listed can't even run a 4K display at 60Hz.

I would also be wary of a dock from a Windows PC maker, such as Dell or Lenovo. There may be Mac compatibility problems, especially for multple displays.

The MagSafe charging adapter definitely can't provide full charging power to a 16" MacBook Pro, but it may be sufficient. If you put a heavy load on the computer, it may use more power than that adapter can provide, and will start using the battery, but in normal use, it will charge.

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Answer 3

zngbm200 Author

Level 1

8 points

Jun 10, 2020 1:46 PM in response to Malcolm J. Rayfield

Thanks again Malcolm. That was very helpful.

By the way, I contacted ElecJet and here's what their support team said about the MagSafe adapter:

"The max output of AnyWatt is 60W, but 16-inch MacBook Pro needs 96W, we do not recommend it work with 16" Macbook Pro, it cannot run high CPU and may heating in using."

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