PowerEdge: XE 16G servers report different PCIe addresses after a BIOS update

Summary: On 16G PowerEdge XE systems, the PCIe addresses of some devices may change after a BIOS update.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

After a BIOS update, some PCIe addresses report different values.

Before BIOS update:

01:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5720 Gigabit Ethernet PCIe

01:00.1 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5720 Gigabit Ethernet PCIe

2a:00.0 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]

2a:00.1 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]

54:00.0 Ethernet controller: Mellanox Technologies MT2910 Family [ConnectX-7]

67:00.0 Ethernet controller: Mellanox Technologies MT2910 Family [ConnectX-7]

d1:00.0 Ethernet controller: Mellanox Technologies MT2910 Family [ConnectX-7]

e3:00.0 Ethernet controller: Mellanox Technologies MT2910 Family [ConnectX-7]
 

After BIOS update:

01:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5720 Gigabit Ethernet PCIe

01:00.1 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5720 Gigabit Ethernet PCIe

27:00.0 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]

27:00.1 Ethernet controller: Mellanox Technologies MT2892 Family [ConnectX-6 Dx]

4d:00.0 Ethernet controller: Mellanox Technologies MT2910 Family [ConnectX-7]

5e:00.0 Ethernet controller: Mellanox Technologies MT2910 Family [ConnectX-7]

ca:00.0 Ethernet controller: Mellanox Technologies MT2910 Family [ConnectX-7]

da:00.0 Ethernet controller: Mellanox Technologies MT2910 Family [ConnectX-7]

Cause

This change was implemented intentionally to standardize PCIe address assignments on PowerEdge XE systems. The following systems include this update:

BIOS Version 2.4.4 and later:

  • XE9680
  • XE9680L

BIOS Version 2.5.4 and later:

  • XE8640
  • XE9640

Resolution

The change in PCIe device addressing is expected behavior following the BIOS update.

Affected Products

PowerEdge XE8640, PowerEdge XE9640, PowerEdge XE9680
Article Properties
Article Number: 000377022
Article Type: Solution
Last Modified: 22 Jan 2026
Version:  1
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