Scosche VQ2M Manual page 5

ATTACHING THE UNIVERSAL HOLDER
Insert T-notch hitch into the T-notch opening on back of holder
(A). Slide T-notch forward and up into the slot (B) to lock the
mounting plate in place. Listen for the "click" sound to ensure
T-notch is locked (C).
REMOVAL:
Slide T-notch hitch down (D) to release mounting plate
from holder (E).
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