Systems configured with rear-exhausting graphics cards (such as NVIDIA RTX 6000 Ada) do not require side ventilation.
Systems configured with internal-exhausting graphics cards (such as GeForce RTX 4070 and GeForce RTX 4080) require side ventilation. Do not block air vents on the left side cover. To ensure heat dissipation, do not place any objects within 4.5 cm (1.8 inches) or 1 rack unit from the left side cover.
For rack-mounted systems, a rack spacer is recommended in the gap above the system.