Item Condition: NEW In good condition

Compatible with: 17x 17y

MPN: 856593-001 460.08C0J.0004 856587-001

17X 17Y has 2 kind of back cover one is with screws hole on the top inside, Another is without screws

Ours is with screws hole which can compatible with the case without screws holes

but the case without screws hole can not compatible with the case with screws holes

So you can buy our case which can compatible with 17x 17y series