Using the SanDisk Professional PRO - DOCK 4 is easy. First, connect the dock to your computer using the Thunderbolt 3 connection. Make sure your computer supports Thunderbolt 3 for the best performance. Then, insert your compatible SanDisk Professional PRO - READERS into the four bays. You can offload multiple memory cards at the same time. Connect your displays, A/V devices, and other accessories to the dock. The built - in 260W power supply will charge your devices while you work. For daisy - chaining, just connect another compatible device to the dock. When not in use, keep the dock in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. If you need to clean it, use a soft, dry cloth. And remember, always use compatible SanDisk Professional PRO - READERS for the best results.