ITEM NAME:STM32F103C8T6 ARM STM32 Minimum System Development Board STM32 Core Board K3F8 STM32F103C8T6 ARM STM32 Minimum System Development Board STM32 Core Board K3F8 Control Chip: STM32F103C8T6 Minimum System Board Operating Chip: 5V Extensible Interface: WIFI ESP8266/NRF24L01/WS1053 W5500 interface Flash: W25X16 EEPROM: ATMEL24C02 Material: Metal/Plastic Colour: Black Size: 53 x 41.7mm Package Contents: 1 x STM32F103C8T6 ARM Minisystem Development Board STM32 Development Core Board 1 x USB Cable (Color Random, don't choose color) 1 x Dupont Cable (Color Random, don't choose color) Note: Light shooting 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..Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. 1 x USB Cable (Color Random, don't choose color). Flash: W25X16. Size: 53 x 41.7mm.