Sony PXW-X180 Operating Manual page 7

2.
Place the accessory shoe so its protrusions
match recesses of the accessory shoe mount,
then fix it to the mount with four screws.
3.
Insert the accessory shoe plate in the
direction of the arrow on the plate surface
until the end of the plate engages the end of
the shoe.
To remove the accessory shoe
Remove the shoe plate in the same way as step 1
of "To mount the accessory shoe." Loosen the 4
screws and remove the accessory shoe from the
accessory shoe mount.
Location and Function of Parts 7