Tools needed: What’s in the box? Qty 1—Adjustable CPU Holder Qty 2—Hook and Loop Straps Screw Driver or Drill Qty 4—3/4” Screws Adjusting the Height: Qty 2—2” Screws Adjusting the Width: Securing under a work surface: Securing to the side of a desk or wall: Qty 4—3/4” Screws Qty 2—2” Screws