In a nutshell, Netduino Plus is a Netduino -- plus integrated Ethernet and Micro SD.
tech specs and details
Netduino Plus uses the open-source lwIP networking stack and production-quality open-source FAT16/FAT32/SD drivers.
A few design features that we hope you'll find useful:
[*]Ethernet jack is low-profile and hard plastic: no worries about accidentally grounding/shorting Arduino shields
[*]Supports most Micro SD cards up to 2GB (SD via SPI, FAT16/FAT32). Integrated card detect.
[/list]Thank you all for being such a terrific community,
Secret Labs LLC