3 extra. 1-11 (US) 1-13 (Europe) 1-14 (Japan). American MacBook Pros (used to?) come locked to 1-11 with no way to change that, which really sucked if you ever

3 extra. 1-11 (US) 1-13 (Europe) 1-14 (Japan). American MacBook Pros (used to?) come locked to 1-11 with no way to change that, which really sucked if you ever traveled anywhere.