The standard Mikrotik power supply fits my video camera and switcher. I want to buy spare 12v 3 amp power supplies but need to know the mm specs on the plug.
Looked at the specs for my RBs and the wall wart but didin't see it listed.

thanks

5.5×2.1

i have seen an special situation on rb3011, it has a longer jack to properly reach the internal board

i have seen an special situation on rb3011, it has a longer jack to properly reach the internal board

The RB2011 did this too...

The standard Mikrotik power supply fits my video camera and switcher. I want to buy spare 12v 3 amp power supplies but need to know the mm specs on the plug.

5.5x2.1mm, this is the most common size for 5v and 12v devices. 5.5x2.5mm is the second most common. My un-scientific numbers from experience.. 80% 5.5x2.1mm, 15% 5.5x2.5mm, and 5% something else..

One thing to watch for though, most (all but one or two) of the Mikrotik power supplies I've seen have been 18v or 24v, some 48v..