Name: Upgraded Version EP-5A Dual USB Power Adapter DC Coupler Used to photograph Andromeda with a Nikon D5600. It allows the camera to be powered by an external power source via the USB port, enabling long-duration shooting without worrying about battery life during long interval shooting. There are two USB power supply ports, so you can connect two batteries simultaneously and replace them one by one during shooting. Connecting to a USB hub eliminates the time constraints of power. I purchased it on Amazon and used it with a Nikon D5600, so I believe it can be used with models that use the D5600's ENEL14a battery. Photos 3 and 4 are photos taken using this cable. According to the Amazon listing, the following models are supported: Df DSLR D3100, D3200, D3300, D5100, D5200, D5300, D5500, Coolpix P7000, P7100, P7700, D7800