This pen attachment mechanism uses pen holder with clip mechanism (non metal material) to
mount on exist hole on PC, such as K‐lock, I/O connectors. The clip of holder is elastic and can be
fastened on hole/connectors by temporary deformation, the deformation magnitude will be limited
after the pen is attached, that means the pen holder is fixed and can’ be taken apart until the pen is
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INC, HP, "PEN ATTACHMENT MECHANISM", Technical Disclosure Commons, (August 09, 2018)