A mounting bracket for seatback in-vehicle entertainment including: a base bracket including posts and a hinge mount; a first inner bracket including grooves corresponding to the posts and, when each of the posts is received in its corresponding groove, a first opening for a first headrest post is formed and a second opening for a second headrest post is formed; a second inner bracket including openings corresponding to the posts, a third opening overlapping the first opening and a fourth opening overlapping the second opening; and a cover including fifth and sixth openings and, when the cover is disposed over the second inner bracket, first inner bracket and base bracket, the fifth opening overlaps the third and first openings to permit the first headrest post to pass therethrough and the sixth opening overlaps the fourth and second openings to permit the second headrest post to pass therethrough.