Package included: 2pcs ESP32-CAM-MB Camera Module and 2pcs USB-TTL Serial Adapter Module. Compared with the old model it does not require complex wiring and supports manual and automatic downloadsHK-ESP32-CAM-MB adopts Micro USB interface convenient and reliable connection method convenient to apply to various IoT hardware terminal occasionsHK-ESP32-CAM-MB module can work independently as the smallest systemA new W-BT dual-mode development board based on ESP32 design using PCB on-board antenna with 2 high-performance 32-bit LX6CPU using 7-level pipeline architecture main frequency adjustment range 80MHz to 240MhzUltra-low power consumption deep sleep current is as low as 6mA. It is an ultra-small 802.11 b/g/n W+ BT/BLE SoC module -->>Our technical service team is always ready to answer your questions. please feel free to contact us--Notethis esp32 cam board is suitable for most Windows systems and there may be compatibility issues with Mac systems Please pay attention to this detail.