HPE DL385 G11 16P PCIE GPU PWR CBL MB - P73574-B21

HPE P73574-B21 DL385 Gen11 PCIe GPU Power Cable

The HPE P73574-B21 is a factory-new, genuine PCIe GPU power cable engineered specifically for the HPE ProLiant DL385 Gen11 server platform. Designed to deliver structured power routing between the motherboard and GPU expansion cards over a PCIe interface, this cable is a direct replacement or supplemental component for DL385 Gen11 builds where GPU-accelerated workloads — AI inferencing, parallel compute, or dense virtualization — are part of the configuration. The P73574-B21 (often searched as P73574 B21) is sourced factory-new from the manufacturer supply chain, ensuring connector tolerances and insulation ratings match the original design specification.

Overview

GPU power cabling inside a dense 2U platform like the DL385 Gen11 is not interchangeable with generic PCIe power cables. HPE-specific routing geometry, connector keying, and wire gauge are matched to the chassis airflow path and the power delivery architecture of the server's backplane. Installing an unverified third-party cable in this application risks poor contact at the GPU power header, which can cause GPU throttling or initialization failures under sustained load — exactly the conditions that matter in a production AI or HPC environment. The P73574-B21 eliminates that variable.

Key Features

• PCIe Interface: Designed for the PCIe power delivery path on the DL385 Gen11 motherboard, ensuring correct voltage and current delivery to installed GPU cards without adapter workarounds that add resistance or compromise thermal management.
• Platform-Specific Fit: Keyed and routed for the DL385 Gen11 chassis — not a universal cable. This matters when cable routing competes with airflow baffles in a populated 2U server; the correct length and connector orientation keep airflow paths clear.
• 0.90 lb Shipped Weight: At 0.90 lb, the cable assembly is straightforward to handle during a hot-aisle rack service event without requiring additional tooling or cable management hardware beyond standard HPE tie-down points.
• Multi-Region Manufacturing: Manufactured across HPE's qualified production facilities (BR, CN, CZ, JP, MX, SG), consistent with HPE's global supply chain standards for server accessory components.

Integration & Compatibility

The P73574-B21 is designed for use in the HPE ProLiant DL385 Gen11 server. Verify your specific DL385 Gen11 configuration — GPU riser cage revision and power connector count — against HPE's QuickSpecs for the DL385 Gen11 before ordering. This cable is not validated for earlier DL385 generations (Gen10, Gen10 Plus) where connector pinouts and chassis geometry differ. For GPU-dense builds requiring multiple power cables, confirm the total cable count against the DL385 Gen11 QuickSpecs GPU configuration table to avoid under-powering multi-GPU configurations.

Frequently Asked Questions

Q: What server platform is the P73574-B21 designed for?

A: The P73574-B21 is a PCIe GPU power cable designed for the HPE ProLiant DL385 Gen11 server. It is not validated for earlier DL385 generations.

Q: Is the P73574-B21 compatible with third-party GPU cards installed in a DL385 Gen11?

A: The cable connects the DL385 Gen11 motherboard PCIe power header to GPU expansion cards. Compatibility with specific third-party GPU cards depends on the GPU's power connector type and HPE's validated GPU list for the DL385 Gen11 — confirm against HPE QuickSpecs for your GPU model.

Q: What does the interface specification