Using the Filament buffer is easy. First, connect it to your single AMS unit following the 4 - Pin cable with snap terminal input and 6 - Pin cable open snap terminal output connections. This will help provide a smooth flow of filament during your 3D printing. Remember, if you have multiple AMS units, don't use this buffer; instead, go for the AMS Hub. As for maintenance, keep it in a dry place. Since it's made of plastics and PCBA, avoid any physical damage. The grey color is not just for looks, but also resists some minor scratches. If you need to replace any parts, use the included 2x M3*21.5 screws carefully. Enjoy your 3D printing with this great accessory!