Lenovo Neptune Direct Water Cooling DWC Rear-Door Heat Exchanger (2025 Gen)
Brand: Lenovo | Category: Accessories & Components
SKU: 4L17A91994 | Part #: 4L17A91994 | MPN: 4L17A91994
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About the Lenovo Neptune Direct Water Cooling DWC Rear-Door Heat Exchanger (2025 Gen)
The Lenovo Neptune Direct Water Cooling DWC Rear-Door Heat Exchanger (2025 Gen) is validated for integration within the Lenovo Neptune DWC ecosystem and ThinkSystem rack infrastructure, delivering enterprise-grade thermal management for high-density datacenter deployments.
This rear-door heat exchanger represents a strategic cooling solution for data center operators, HPC architects, and AI infrastructure teams seeking to overcome the thermal limitations of conventional air cooling. The unit employs direct water cooling via a liquid-to-air heat exchange matrix that captures hot exhaust airflow at the rack rear, connecting seamlessly to facility chilled water supply and return loops. Engineered for standard 19-inch EIA rack form factor compatibility, the Neptune DWC Rear-Door Heat Exchanger is designed to support high-density deployments that exceed standard air-cooling thresholds. By leveraging passive heat exchange technology with fan-assisted capability depending on configuration, this solution enables datacenter operators to improve energy efficiency and reduce Power Usage Effectiveness (PUE) across mission-critical environments. The 2025 Gen architecture reflects Lenovo's commitment to advancing liquid cooling infrastructure within enterprise compute rack thermal management, making it an ideal choice for organizations running demanding AI, machine learning, and high-performance computing workloads.
Key Specifications
- Manufacturer: Lenovo
- Manufacturer Part Number: 4L17A91994
- Product Type: Rear-Door Heat Exchanger (RDHx)
- Cooling Method: Direct water cooling via rear-door liquid-to-air heat exchange
- Rack Compatibility: Standard 19-inch EIA rack form factor
- Application: Datacenter, HPC, AI/ML, and enterprise compute rack thermal management
For enterprise procurement teams evaluating liquid cooling infrastructure, contact Omnixon Global to request a detailed quotation and technical support for your specific deployment requirements.
Technical Specifications
| Brand | Lenovo |
| Category | Accessories & Components |
| SKU | 4L17A91994 |
| Part Number | 4L17A91994 |
| Condition | New |
| Brand Line | Lenovo Neptune Direct Water Cooling (DWC) |
| Manufacturer Part Number | 4L17A91994 |
| Product Name | Neptune DWC Rear-Door Heat Exchanger (2025 Gen) |
| Product Type | Rear-Door Heat Exchanger (RDHx) |
| Cooling Method | Direct water cooling via rear-door liquid-to-air heat exchange |
| Rack Compatibility | Standard 19-inch EIA rack form factor |
| Cooling Technology | Liquid-cooled heat exchanger matrix capturing hot exhaust airflow at rack rear |
| Facility Water Connection | Connects to facility chilled water supply and return loop |
| Cooling Mode | Passive heat exchange (fan-assisted capability depending on configuration) |
| Target Rack Power Density | Designed for high-density deployments exceeding standard air-cooling thresholds |
| Integration | Compatible with Lenovo Neptune DWC ecosystem and ThinkSystem rack infrastructure |
| Application | Datacenter, HPC, AI/ML, and enterprise compute rack thermal management |
| Generation | 2025 Gen |
| Product Category | Datacenter Liquid Cooling Infrastructure / Rack Cooling Accessories |
| Regulatory & Standards | Designed to support datacenter energy efficiency and PUE improvement initiatives |
| Region Availability | Global — UAE, GCC, EMEA, APAC, and worldwide |
Frequently Asked Questions about Lenovo Neptune Direct Water Cooling DWC Rear-Door Heat Exchanger (2025 Gen)
What is the lead time on the Lenovo Neptune Direct Water Cooling DWC Rear-Door Heat Exchanger (2025 Gen)?
Lead time depends on stock position. Submit the RFQ form on this page with your quantity and target date — our pre-sales team responds with a vendor-confirmed quote.
What support applies?
Full manufacturer support — sourced exclusively through distribution so serial-number registration and support claims process cleanly under your company name. Extended support and on-site support contracts available at quote time.
How do I get a formal quote?
Use the RFQ form on this page with quantity and destination country. Our pre-sales team responds with a vendor-confirmed quote, availability, and any matching support or commissioning options.