The components are delivered as a single unit designed to last a minimum of 5 years without service or liquid refilling.
It was later replaced by a new and more flexible design featuring a separate pump unit which made it much easier to fit a broader range of motherboards with different CPU socket locations.
The pump includes an integrated reservoir and spring-loaded floor, to keep the unit pressurized while still allowing small amounts of liquid to bleed out over time.
To avoid condensation the MCB firmware limits the use of the TECs and turns them on only when the CPU is under heavy load.
While Dell continues to offer liquid cooling in their Alienware gaming computers, they have discontinued use of the H2C technology with the XPS 730X being the last model to utilize it.