No, the SL 2442AI does not come with an AVB card, you have to buy one. And you will need an AVB switch to get both mixers working in whatever mode you choose. For stagebox mode you don't need UC Surface, but for I/O mode you need UC Surface (on a computer with firewire or router/iPad). There is some kind of functionality between SL 2442AI without AVB card and RM32AI, but I don't remember any more. I am so used to the features of AVB, also because I am working with 3 mixers in any possible combination. An AVB card for your SL 2442AI opens new horizons... ;-)
