The A4-H2O PCIe 5.0 is an 11-liter small-form-factor case, and a collaboration project with DAN Cases. Based on the original DAN A4-SFX case sandwich layout concept, the A4-H2O continues the minimalist, compact form factor, with improved hardware compatibility (including AIO water cooling) and simplified installation. The 11-liter compact case supports a 240 AIO and a triple-slot GPU up to 322mm long. With a minimalist design featuring anodized and sandblasted aluminum panels. Previously only available with PCIe 3.0 or 4.0 riser cables, the A4-H20 is now updated with a PCIe 5.0 riser cable.