The OEM Cisco Stacking Cable 800-40403-01 (STACK-T1-50CM) is a black cable specifically designed for Cisco networking equipment. It has a length of 50cm and features Stackwise-480 connectors on both ends. This cable is used for stacking multiple Cisco devices together, providing a reliable and efficient way to connect and transfer data between them. Made by Cisco in Germany, this cable is a high-quality, genuine product that ensures compatibility and performance for your networking needs.