Bought a Keylab essential used. Instead of the usb c, it has an ethernet like connector on the back. Does this mean the unit is older?
Hi jkuban!
I checked on my (old) Keylab 61.
I was intrigued by a model with an ethernet connection 
I’d say it’s a standard USB-A input. If so, it is older.
Hi @jkuban and welcome to The Sound Explorers Forum!
I concur with @francoise above, it sounds like one of the older USB type B 2.0 connectors, i have several devices here that use those.
There’s a useful guide to USB (and a few other types) connectors HERE if you are still unsure.
HTH!
Ps,
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