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Broadcom
Broadcom 05-50054-00 P411W-32P NVMe Switch Adapter PCIe 4.0 x16
Connects up to 32 NVMe drives through a PCIe 4.0 x16 low-profile card using a PEX88048 switch chip
- TypePCI-Express
- InterfacePCI-Express 4.0 x16
- DimensionsLow profile 6.13" x 2.71"
- FeaturesThe P411W-32P adapter leverages Broadcom’s world-class board
- Connect up to 32 NVMe drives via PCIe 4.0 x16 host link
- Low-profile 6.13" x 2.71" design fits 1U and tower servers
- PEX88048 PCIe Gen 4.0 switch chip enables flexible x4, x2 or x1 drive configurations
- Validated firmware and out-of-band manageability simplify enterprise deployment
- Broadcom board design delivers advanced NVMe switching features beyond traditional attach methods
Broadcom P411W-32P NVMe Switch Adapter
The Broadcom P411W-32P is a PCIe 4.0 x16 adapter that expands a single host slot into many NVMe connections. It targets server builders who need dense solid-state storage in 1U racks or tower chassis. The low-profile card fits tight spaces where standard-height cards cannot be installed.
Sustained load behaviour with PEX88048 switch
The onboard PEX88048 PCIe Gen 4.0 switch chip manages traffic between the host and up to 32 attached drives without a single bottleneck port. Firmware validated by Broadcom keeps queues balanced during long write bursts, preventing the throughput collapse seen on simpler bifurcation cards. Thermal design supports continuous operation in airflow-restricted 1U enclosures.
Installation notes and common issues
Low-profile dimensions of 6.13 by 2.71 inches allow direct fit in most rack rails, but the card requires a PCIe 4.0 x16 slot wired for full electrical width. Builders often assume an x8 physical slot will suffice; it will not. Cable routing for 32 drives demands careful planning — backplane connectors are not included.
First listed November 2020
The adapter entered Broadcom’s catalogue on 12 November 2020 and remains a current SKU for new deployments. No bundled cables or brackets are shipped in the box. Buyers needing RAID offload should evaluate MegaRAID alternatives instead.
Highlights
- Connect up to 32 NVMe drives via PCIe 4.0 x16 host link
- Low-profile 6.13" x 2.71" design fits 1U and tower servers
- PEX88048 PCIe Gen 4.0 switch chip enables flexible x4, x2 or x1 drive configurations
- Validated firmware and out-of-band manageability simplify enterprise deployment
- Broadcom board design delivers advanced NVMe switching features beyond traditional attach methods
Specifications
| Brand | BROADCOM |
|---|---|
| Model | 05-50054-00 |
| Type | PCI-Express |
| Interface | PCI-Express 4.0 x16 |
| Dimensions | Low profile 6.13" x 2.71" |
| Features | The P411W-32P adapter leverages Broadcom’s world-class board design, PEX88048 PCIe Gen 4.0 switch chip, and solid firmware expertise, to provide advanced features not available using traditional NVMe drive attach methods. Similar to Broadcom MegaRAID adapters and HBAs, the P411W-32P adapter is supplied with fully validated and supported firmware and standards based out of band manageability features. |
| Shipping weight | 0.34 kg |
| Package size | 229 × 152 × 64 mm |
Questions about this item
Does the PEX88048 switch chip need active cooling when the adapter runs continuously in a 1U server?
The low-profile card relies on chassis airflow; the PEX88048 is rated for PCIe 4.0 x16 operation without a dedicated fan, so sufficient case cooling is the only requirement.
What host slot and firmware support are required for the P411W-32P to enumerate all connected drives?
A PCIe 4.0 x16 slot and a system BIOS or OS that supports the PEX88048 switch are needed; the adapter ships with Broadcom-validated firmware for out-of-band manageability.
Will the adapter bifurcate a single x16 link into 32 x1 NVMe paths for older drives that only negotiate Gen 3 speeds?
The PEX88048 switch supports up to 32 x1 connections and is backward compatible with PCIe 3.0 NVMe SSDs, allowing mixed-generation drives on the same adapter.
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