Welcome to Apple Support Communities. I understand that you'd like to connect your MacBook Pro to an external display and you're looking for the cable you'll need to use. I can understand reaching out for this information, I'd like to help. The cable you can use for this depends on the model of MacBook Pro you're using, and the ports it has available. This resource will help you to determine which adapters and cables are needed, based on the ports you have: macOS Sierra: Use your TV as a display
Once you've determined the cable you need, this resource will assist you with using the external display with your Mac: Use multiple displays with your Mac
Welcome to Apple Support Communities. I understand that you'd like to connect your MacBook Pro to an external display and you're looking for the cable you'll need to use. I can understand reaching out for this information, I'd like to help. The cable you can use for this depends on the model of MacBook Pro you're using, and the ports it has available. This resource will help you to determine which adapters and cables are needed, based on the ports you have: macOS Sierra: Use your TV as a display
Once you've determined the cable you need, this resource will assist you with using the external display with your Mac: Use multiple displays with your Mac
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need a cord to support tv monitor hook up to a MacBook pro
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