Changes

* Please follow screw torque order when install C519 with CM5 and X1500/X1501.* 1. Pre-thread the screws into their holes but not past the CM5 PCB's surface.* 2. Align the C519 carefully with the mounting holes, maintaining near-zero clearance during assembly.* 3. Press down firmly on the C519 until the heatsink touches the PCB, then tighten the screw.