MacBook 12-inch 'retina' (Early 2016) A1534 emc2991

Machine ID: MacBook9,1

The Card is the alternative to swapping the EFI ROM chip on your motherboard. It plugs into a tiny connector on the motherboard. As long as the Card is plugged in (it has to stay plugged in...) the ROM on the Card will be the one that is used. Using this Card is simple. Turn off the Mac, plug in the card, turn on the Mac. Just make sure you order for exactly the right model of Mac! The wrong model will never work.

This card plugs into the matching connector on the

motherboard. Make sure the Mac is powered off.

BEFORE placing the card, press the little button

on the motherboard near the battery connector untill

the white LED on the motherboard goes off.

The card has to be plugged in with the arrow

pointing towards the FRONT of the Mac.

The card has to remain in the computer.

Private seller, no returns.