2 of 3 people found the following review helpful
Works after a fashion,
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This review is from: Proxima Direct® Mini Displayport to HDMI adapter - for MacBook Pro Air iMac etc - With Audio Top Quality - Thunderbolt Compatible
Thunderbolt is designed to allow connection of mini-dp cables, but the tolerance for mini-display port in a thunderbolt port is pretty lax, meaning this connector is loose when connected to a late 2013 iMac. It does work in a thunderbolt port, but the loose fit means you will be frequently nudging it to remake the connection.