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new MacBook Pro, old apple monitor, how to connect

MacBook doesn't recognize the display. I have it plugged in using the usb c port via an adaptor to an old USB port. Should that work? I have powered down and restarted. asked to detect displays, and checked specifications but the page won't open.

MacBook Pro 16″, macOS 10.15

Posted on Jan 30, 2021 3:00 PM

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Question marked as Top-ranking reply

Posted on Jan 31, 2021 4:36 PM

Since that is a genuine Thunderbolt Display, the Apple ThunderBolt-3 <-> ThunderBolt-2 adapter is the right tool to use with a ThunderBolt-3 Mac. Because the display has a captive cord, you can plug it right into the adapter.


NB> That adapter ONLY works with ThunderBolt displays, not USB-C or Mini DisplayPort or any other kinds of displays.

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Question marked as Top-ranking reply

Jan 31, 2021 4:36 PM in response to garlicmmhmm

Since that is a genuine Thunderbolt Display, the Apple ThunderBolt-3 <-> ThunderBolt-2 adapter is the right tool to use with a ThunderBolt-3 Mac. Because the display has a captive cord, you can plug it right into the adapter.


NB> That adapter ONLY works with ThunderBolt displays, not USB-C or Mini DisplayPort or any other kinds of displays.

Jan 31, 2021 5:06 PM in response to garlicmmhmm

Cables

  • Built-in Thunderbolt cable
  • Built-in Universal MagSafe cable (up to 85W)

Peripheral connections

  • Three powered USB 2.0 ports
  • FireWire 800 port
  • Gigabit Ethernet port
  • Thunderbolt port
  • Kensington security slot


--------

The USB-A ports on the display are NOT inputs. They are not fast enough for display data.


They are intended for use with slower devices like keyboards and mice -- maybe a hard drive, but never the display itself. The display has a ThunderBolt-2 Hub that splits off regular USB-A ports, but it does not work back the other direction.


By contrast, If your cable situation were different, it is likely that the Thunderbolt port COULD be used as an input, in place of the captive ThunderBolt cord.

Jan 30, 2021 4:10 PM in response to garlicmmhmm

garlicmmhmm wrote:
new MacBook Pro, old apple monitor,
MacBook doesn't recognize the display. I have it plugged in using the usb c port via an adaptor to an old USB port. Should that work? I have powered down and restarted. asked to detect displays, and checked specifications but the page won't open.


See if this does not work.


Generally to make the jump from output to display input successfully, at most one adapter. Rarely can you stack adapters.


Maybe this is more to the point:

https://www.macworld.com/article/3534509/connect-old-apple-display-to-a-new-mac-to-give-it-new-life.html


Jan 31, 2021 11:33 AM in response to leroydouglas

ok, thanks, I didn't think I stacked (just one adapter) but apparently the ports on the back don't make the connection to the laptop. I've purchased the adaptor (thunderbolt 2 to 3) and hope that will do the trick. The Macworld article was helpful. also wondering if there is a way to use the HDMI via an adaptor to the usb-c. really boggled by how many usb versions there are.


and I assume there is now no way to use the monitor's Ethernet port?


anyway, thanks.

new MacBook Pro, old apple monitor, how to connect

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