Dell S500 Projector - Manual (Page 42)

Using the Wrist Strap (for S500wi only)
Please use the wrist strap as a safety precaution in case of loss of grip on the
Interactive Pen, and prevent damage to the Interactive Pen, surrounding objects,
or injury to other people.
1 Feed the cord on the wrist strap through the connector holder.
2 Wear the wrist strap on your wrist.
Using Your Projector 42