This elegant case pass-through for an open PCIe or PCI slot is equipped on the outside of the computer with a self-sealing hose connection. This connection features a valve that opens only when a hose is inserted and closes again when the hose is removed. On the inside, there is a G1/4 thread available for connection to the cooling circuit. In a water cooling system equipped with LEAKSHIELD, coolant can be easily refilled. After activating the filling mode on the LEAKSHIELD, the hose is inserted, and the free end of the hose is held in the coolant bottle or coolant canister. The coolant is drawn into the cooling system by negative pressure. Once the desired fill level is reached, the hose is pulled out of the coolant bottle or canister, and any remaining liquid in the hose is also drawn in. The hose is then disconnected from the slot cover, which seals the connection again. Delivery includes: one stainless steel slot cover, acetal pass-through, and self-sealing hose connection, along with two meters of suitable filling hose. Please note: the internal connection for connecting to the cooling system is not included; please order a compatible connection for your hose system separately. LEAKSHIELD is not included in the delivery.