I did a video wall with the Color Max MC-RX1/TX1 about a year ago.? I know the baud rate is adjustable.? If I remember correctly, you change the baud rate via a telnet command.
The Color Max was a brand new product when we used it and we had a lot of lock up issues at first.? In particular, it would tend to lock up when you send it a command (whether it be a IR, RS232, or video wall command).? We landed up running IR to the displays from the Crestron processor to help reduce the lock ups.?? But even then, we had occasional lock ups.? Eventually Just Add Power did come up with a firmware update and after that the product was stable.? But I didn't go back and try using RS232.
After the initial issues, I was pretty impressed with the things the Color Max could do.? And absolutely no passwords required (unlike Crestron).? Even can preview the image via the web gui even with HDCP sources. The major down fall however is it does not support 1080i (at least a year ago it didn't).? So for cable boxes? satellite receivers you will have to use 720p.
Tech support was pretty good.
I might note that we used standard multicast instead of their custom manage switch solution.? So we did not use their Crestron module.
