Features: Brand new and high quality For STM32F042F6P6 for MCU with internal oscillator. For SWD header for easy debugging (not mounted by default). Dual USB port (Vertical or Horizontal) with breakout pin header for USB header. I2C display connections for 1.3-inch display with jumpers on the back to select which pins (1 or 2) are power and ground. EN11-style click encoder support. Reset button. Specifications: Material: PCB Size: approx. 8X3.5cm/3.15x1.24in 3 GPIO pin header 1 onboard Neopixel with data line broken out for expansion Besides the parts for PCB and parts for SMD (see for BOM), you need: Device for Encoder/for DigiKey Reset Button 6mm Tactile Buttons 4.3mm High An OLED Display 1.3 inch Pin Header Assortment Male for Dupont-Style and/or for JST-XH Style (May be good for USB as it is polarized) Optionally you can get: For Neopixels or look on other platform for bare 5050 for Neopixels Micro USB Port (for Horizontal for Molex 105017-0001 or equivalent) or (for Vertical for Molex 105017-0001) Note: Due to the lighting effects and shooting angles, there may be some color difference, please understand. Due to manual measurement, there may be a tolerance in the product size. Package Includes: 1PC x Screen Display