High-quality metal material: Ensures robustness and durability, providing full protection for your GPUs and electronic devices. Enhanced cooling: Facilitates superior air convection for efficient heat dissipation, extending the service life of graphics cards. Professional build: Features non-marring, non-slip rubber feet and EVA Foam on the crossbar to safeguard your graphic cards. Stackable design: Accommodates easy stacking with additional connectors or stacking brackets (sold separately) for expanded mining rig setups. Easy & fast installation with detailed instructions. Frame only: Does not include fans, CPU, GPU, PSU, motherboards, or cables. USA BRAND: Ship from USA. Full support and warranty. AI Machine Learning Compatible: This mining frame is also ideal for building AI learning machine setups, providing the same durability and cooling efficiency for intensive computational tasks.