Features 1.Precise cuts and interfaces ensure perfect fit, suitable for mounting positions and easy to install. 2.The product uses materials to effectively avoid corrosion and wear and durable use. 3.Professional chipset provides superior performance in the system. 4.USB development board, easy to operate, anti-aging, and extend the service life. 5.This product can be used as a packsniffer, using the CC2531 USB Dongle with packetsniffer to capture wireless data packets for developing USB for HID and CDC devices. specificationItem Type: Development Board Model: CC2531 USB Dongle Function: As a packetsniffer, use CC2531 USB Dongle with packetsniffer to capture wireless data packets, used to develop USB for HID and CDC devices use CC2531 USB Dongle as receiving terminal to control computer, or use as CC2531 development board PackageListModule x 1 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.