ITEM NAME:STM32F103C8T6 Mini System ARM STM32 F103 Microcontroller Development Boad #gib Product Description Description: Features: STM32F103C8 main chip. SMD 8M crystal (through the chip internal PLL up to 72M) ST official standard parameters. LM1117-3.3V regulator chip provides a maximum of 800mA current. All the way mini USB port, the system can be.All the way mini USB port, the system can be powered version, aside USB communication. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.