I keep looking on which way to mount my missing link on my KMC Z50 chain and I cannot find it ....

To me, it looks like the open end should face towards the back of the bike when looking at the top of the chain from the drive side,am i right ?
Or does the orientation does not matter ?

On my other bike, with a KMC x9.99, the missing link looks like unidirectional, thus i am a bit confused with this one