The Carrier Board connects the port headers of a JeeNode, JeeNode USB, or JeeSMD MPU board to various combinations of alternate port header positions. It fits exactly in the slots of a low-cost plastic enclosure:
The Jeenode boards can be placed in two orientations, allowing the USB or FTDI connector to either point toward the outside or the inside of the case.
If the PWR/SER/I2C and SPI/ISP connectors are also populated and connected, then all these ATmega I/O pins become available along one edge of the carrier board (for use with a "Carrier Card", for example).
There are numerous ways to use this Carrier Board with all sorts of JeePlugs:

Configuration
There is nothing to configure.
Errata
The optional DC jack should not be soldered onto the board as is, because then the middle pin will be connected to ground. See this weblog post for several workarounds.
Header Pinouts
Note: the port assignements depend on the orientation of the JeeNode!

A detailed overview of the pinouts is available here, and also as PDF.
Design Info
Dimensions: 25.1 x 119.8 mm
CadSoft EAGLE design files: jlpcb-093.pdf / jlpcb-093.sch / jlpcb-093.brd.
How to Get It
http://shop.jeelabs.com/products/carrier-board
See Also
The Carrier Card is a companion board which adds two larger prototype boards to fill the remaining area of the plastic enclosure.
Related Weblog Posts
- 2010-04-11 - Original Carrier Board announcement
- 2010-05-21 - Meet the Carrier Board
- 2010-05-23 - In and out of the box
- 2010-05-26 - DC jack connection errata