30-Jun-2019, 12:04
I own both a 440Pro and a 400, as others have said the 2 x 220Pro units of the 440 are identical and Master / Slave is only governed by which one you configure as the master and which you configure as the slave. The 400 is a different story and the slave is not equal and has a lesser hardware configuration which I noticed when I tried to plug Ethernet into the 400 slave unit. The port is there but the control board is missing so it didn't work, on the 440 I can use either.
