The Nikon WU-1a Wireless Mobile Adapter is a black adapter designed for Nikon cameras such as the D3200, D3300, D7100, and D5200. It features a USB connector type A and a USB Standard Type A Female connector B. The adapter allows for wireless connectivity between the camera and a mobile device, enabling easy sharing and transfer of photos and videos. This adapter is ideal for those looking to streamline their photography workflow and enhance connectivity between their Nikon cameras and mobile devices.