Cooling Rack Alphacool 25051 Rectangular Stainless Steel Black Grey

The Alphacool ES 1U ServerRack is a 1U stainless steel enclosure designed to host compact server or workstation builds with integrated water cooling. It supports one Alphacool NexXxoS full-copper 7x40mm radiator and can accommodate water-cooling systems rated to dissipate up to 490 W of waste heat. The rack includes drive mounting options, a pre-mounted 2.5" drive frame, and mounting positions compatible with a wide range of motherboard form factors, including SSI-EBB and standard ATX hole patterns.

Advantages

The enclosure is optimised for water cooling and allows flexible placement of the radiator and fan assembly to suit different coolant loop layouts. Drive bays and the centrally pre-mounted 2.5" drive bracket provide multiple storage options, while the case supports installation of Mini-ITX up to EE-ATX motherboards and low-profile PCIe cards via a riser. Constructed from durable stainless steel with a compact 1U profile, the rack is suitable for space-constrained server racks and housings.

Suitable for

• Compact 1U server or workstation builds using water cooling
• Systems requiring dissipation of up to 490 W of waste heat
• Setups with a single 7x40mm Alphacool NexXxoS full-copper radiator
• Configurations needing multiple drive options (2.5", 3.5" and 5.25")

Key specifications

• Supports up to 490 W heat dissipation with appropriate water cooling
• Radiator support: one Alphacool NexXxoS full-copper 7x40mm
• Fans: compatible with Alphacool ES 40mm PWM fans (optional)
• Drive bays: two 5.25" front bays (each convertible to two 3.5") and a pre-mounted frame for up to four 2.5" drives (relocatable)
• Motherboard compatibility: SSI-EBB and standard ATX mounting holes (fits Mini-ITX to EE-ATX)
• Low-profile expansion: supports PCIe or 0.8" low-profile cards via riser; 0.8" panel pre-mounted
• Material: stainless steel; color: black/grey
• Dimensions (W x D x H): 478.5 mm x 730.8 mm x 44.5 mm
• Manufacturer: Alphacool, MPN: 25051, EAN: 4250197250511

How to use

Install the motherboard using the provided ATX-compatible standoffs and secure drive units in the chosen front bays or the central 2.5" bracket. Mount the Alphacool NexXxoS 7x40mm radiator into the supplied radiator frame and position the frame within the enclosure according to your coolant loop routing. Connect fans (Alphacool ES 40mm PWM fans recommended) and route tubing and wiring carefully to maintain airflow and serviceability. If a discrete GPU or expansion card is required, use a riser cable and the pre-mounted 0.8" panel for low-profile cards.

Recommendations

For reliable operation at the rated 490 W heat dissipation, use compatible Alphacool water-cooling sets configured for this enclosure and ensure fans are PWM-controlled to balance cooling performance and noise. Verify tubing clearances and secure all fittings to prevent leaks; perform a leak test before powering electronic components.