Technical Specifications- 10/100 Mbit DP83825 PHY Ethernet- USB Host (5 Pins w/ Power Management)- Micro SD Socket SDIO (4 Bit Data) - 35 PWM Pins- 18 Analog Inputs- 8 Serial Ports- 8 Mbyte Flash Memory- QSPI Memory (2 Chips Plus Program Memory) - 42 Breadboard Friendly I/O- 7 Bottom SMT Pad Signals- 6 SD Card Signals- 55 Total IO Pins