Broadcom PEX89048 PCIe 5.0 Switch – 48-Lane ExpressFabric
Mfr. Part #:PEX89048
Manufacturer:Broadcom
Product Type:PCIe 5.0 ExpressFabric Switch
Package:29 × 29 mm
Applications:AI Servers, NVMe Storage, Data Centers, PCIe Expansion
Description:48-lane, 48-port PCIe Gen5 switch supporting 32 GT/s, low-latency connectivity and multi-host PCIe fabrics.
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Get Price & AvailabilityBroadcom PEX89048 PCIe 5.0 Switch – 48-Lane ExpressFabric
The Broadcom PEX89048 is a 48-lane, 48-port PCIe 5.0 ExpressFabric switch designed for high-performance servers, NVMe storage systems and scalable PCIe connectivity. Supporting 32 GT/s per lane, it provides flexible PCIe expansion with low switching latency and multi-host capabilities.
Key Specifications
| Manufacturer | Broadcom |
| Part Number | PEX89048 |
| Product Type | PCIe 5.0 Switch |
| PCIe Generation | PCI Express 5.0 |
| Data Rate | 32 GT/s per lane |
| Total Lanes | 48 |
| Maximum Ports | 48 |
| NT Ports | 4 |
| Latency | 115 ns |
| Typical Power | 23.7 W |
| Package Size | 29 × 29 mm |
| Lifecycle | Active |
Applications
AI and GPU servers requiring PCIe expansion
NVMe SSD storage arrays and all-flash systems
Data center and cloud server infrastructure
Multi-host PCIe connectivity and I/O sharing
When to Choose PEX89048
Choose PEX89048 when your system requires up to 48 PCIe Gen5 lanes, low-latency switching and flexible host-to-device connectivity. It supports SR-IOV-based I/O sharing and non-transparent connectivity for multi-host designs.
For designs requiring fewer lanes, consider PEX89024 or PEX89032. Verify your upstream/downstream lane allocation and port configuration before selection.
Related Model Comparison
| Model | PCIe | Lanes | Typical Use |
|---|---|---|---|
| PEX89024 | Gen5 | 24 | Compact PCIe expansion |
| PEX89032 | Gen5 | 32 | Mid-range PCIe switching |
| PEX89048 | Gen5 | 48 | Server and NVMe expansion |
| PEX89072 | Gen5 | 72 | Larger PCIe fabrics |
Replacement and Upgrade Considerations
PEX89048 may be considered when upgrading a PCIe Gen4 switching design to Gen5 performance. However, it is not a guaranteed pin-compatible replacement for earlier switches. Package dimensions, board layout, power delivery, firmware and PCIe topology must be reviewed.
Related Products and Guides
PEX89048 Datasheet, Availability & RFQ
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Frequently Asked Questions
Is PEX89048 a PCIe Gen5 switch?
Yes. PEX89048 supports PCIe 5.0 signaling at up to 32 GT/s per lane.
How many PCIe lanes does PEX89048 support?
It provides 48 PCIe lanes. Actual port widths depend on system configuration.
Can PEX89048 replace a PCIe Gen4 switch?
It can be evaluated for a Gen5 upgrade, but electrical, mechanical and firmware compatibility must be verified before replacement.
