What does that mean? Well now you can connect two bricks, back-to-back with a cable connected between their S4 ports and communicate at a blinding 921600 bps! That’s quite a bit faster than regular Bluetooth and without the overhead of those mailboxes.
This opens up a whole new world of possible sensors! One of them being the new Dexter Industries NXTBees. How cool is that?
You can download the block from here: [LINK]. You will need at least version 1.05 of the LEGO NXT firmware to use this.