Box Link is an item that allows you to access your PC Box anywhere, but it can only be used when registered. As the Box Link is a prototype, there are only a few copies out there for you to find!

Here are the locations, in order:

1. Shabboneau Castle (2F, near the desk by the stairs)

2. Route 8 - Cliffside area (on the narrow arm of cliff jutting over the beach, in the space one step east and south from the point of the cliff; hidden)

3. Glittering Cave (In the deep part of the cave, south of the Fossil assistant)

4. Reflection Cave (B1F, on the hill in the south, north of Black Belt Igor)

5. Anistar City (In the middle of the terrace east of the Gym; hidden)

6. Terminus Cave (B1F, West of the two ledges south of the bridge that Hiker Aaron is walking on)

7. Route 19 (On the rock next to Pokémon Ranger Clementine in the west part of the swamp area, requires Surf; hidden)

8. Frost Cavern - Outside (Just west of the cave entrance, facing northwest into the corner; hidden)

9. Victory Road - Room 3 (Near the end of the ledge maze, between the two ledges west of the staircase, on the ground in the center; hidden)