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Apple's 2016 revision to their laptop lineup targeted at professional users. Features a 15-inch, 2880-by-1800 Retina display, quad-core Intel Core i7, 256 GB / 512 GB /1 TB / 2TB storage options, 16 GB RAM, and a keyboard equipped with a Touch Bar. Released November 2016. Features Model A1707.

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3/4 USB-C slots not working after Battery Replacement

Just replaced my battery with an IFIXIT battery.

Initially, none of the 4 USB-C ports worked.

Googled the issue - said to reset the SMC. Did that.

Now, only 1 of 4 of the USB-C ports are working. Tried resetting again, no luck, still only 1 port is working.

Any thoughts? Advice?

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Did you try reseating the port cables? I would focus on the side that both ports are not working. Follow the MacBook Pro 15" Touch Bar Late 2016 Battery Replacement follow Step-1 to make sure your system is fully off and down to Step-8 getting toe bottom cover off again.

Jump down to Step-37 and carefully lift off the connection so you can inspect the contacts on both the logic board and cable do you see any bend or damaged? Any dirt stuck inside (use a short blast of can'ed air to make sure) Lastly, is the ribbon cable damaged?

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