SmallRig Sony A7II/A7RII/A7SII/ILCE-7M2/ILCE-7RM2/ILCE-7SM2 HDMI Lock 1679 is specially designed for Sony A7ii Cage 1660.
Attached to the cage with two 1/4”-20 screws, it prevents HDMI cable from accidental dropping. Moreover, this HDMI lock is equipped with two M5 threaded holes to lock USB Cable with screws.
Material(s): Aluminum Alloy
Net Weight: 41g
1x HDMI Lock
2x M5 Screw
2x 1/4'' Screw
1x Hex Spanner
The item description doesn't say that this clamp is compatible with the Sony a7R III and a7 III cameras in a SmallRig #2087 cage, but I can confirm it works great. Very happy with it.
This little stuff could be mounted on the side of cage with 1/4”-20 threaded holes. It could lock HDMI cable tight via a wingnut on the side. It prevents the HDMI cable from accidental removal. Simple as it seems, it is really of great use. Fantastic!