For R4 WIFI Development Board Storage:256KB Flash/32KB SRAM Working voltage:5V Input voltage:4-18V Clock frequency:48mhz Interface:usb-c Name:For R4 minima Number of digital I/O interfaces:14 Number of PWW interfaces:6 Number of ADC interfaces:6 Number of DAC interfaces:1 (12bit) Number of SPI interfaces:1 Number of I2C interfaces:1 Number of CAN interfaces:1 Due to different batches, there may be differences in product appearance and printed text, which will not affect use. Colour:As Shown Material:ABS Package Contents: 1 x Development board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.