mac Pro 2019 monitor connections
Connecting a New Mac Pro 2019 to an Apple 27-inch 2560 x 1440 QHD Monitor (MC914LLA)
what cable do I need?
Mac Pro, OS X 10.11
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That appears to be a genuine Thunderbolt Display, with a ThunderBolt-2 input. specs here:
https://everymac.com/monitors/apple/thunderbolt/specs/apple-thunderbolt-display-27-inch-specs.html
The preferred connection method for a ThunderBolt-3 computer to genuine Thunderbolt displays ONLY, (no others, and no adapters) is the Apple ThunderBolt-3 <--> ThunderBolt-2 adapter. You are picturing a captive cable, so no additional ThunderBolt cable should be needed. The adapter has a ThunderBolt-3 pigtail and a female ThunderBolt-2 jack.
Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter -- $49.00
About the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter - Apple Support
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