GoPro Hero 3 Silver edition User Manual page 61

AttAChinG ADhesiVe mounts
Apply to clean surface only. Wax, oil, dirt or other debris will
Pro
reduce adhesion, which can result in a weak bond and risk of
tiPs:
losing camera should connection fail.
Attach mount in room temperature conditions. Mount's
adhesive will not bond properly if applied in cold or damp
environments to cold or damp surfaces, or if the surface is not
room temperature.
Adhesive mounts should only be mounted to smooth surfaces;
porous or textured surfaces will not enable a proper bond.
When applying mount, firmly press into place and ensure full
contact over entire surface.
For best results, attach the mount a minimum of 24 hours
prior to use.
▶See gopro.com/support for more information on mounts.
Locking Plug
Using the HERO3 in high impact sports such as surfing or skiing
where significant impact may occur? Use the special locking
plug which securely locks the attachment buckle fingers into
place--helping prevent accidental housing release from the mount.
The circular ring fits over the thumbscrew and acts as a leash to
prevent dropping or losing the locking plug.
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