- One M-501 embedded module - One carrier board with o one RS-232/422/485 line driver, RJ45 connector o three RS-232 line drivers, RJ45 connector o one RJ45 connector for Ethernet o two USB host connectors o two 20-pin headers for 32x GPIOs o Status LEDs for Etherent port and serial port o power input circuitry (9~48VDC) - CDROM with GNU C/C++ Tool Chain and documentation