---
title: PEX 8748
url: https://www.broadcom.com/products/pcie-switches-retimers/pcie-switches/pex8748
description: The ExpressLane PEX 8748 is a 48-lane, 12-port, PCIe Gen 3 switch device developed on 40nm technology. PEX 8748 offers Multi-Host PCI Express switching capability that enables users to connect multiple hosts to their respective endpoints via scalable, high-bandwidth, non-blocking interconnection to a wide variety of applications including servers, storage, communications, and graphics platforms.
---
# PEX 8748
**48-Lane, 12-Port PCI Express Gen 3 (8 GT/s) Switch, 27 x 27mm FCBGA**
Currently viewing:
- [Overview](https://www.broadcom.com/products/pcie-switches-retimers/pcie-switches/pex8748#overview)
- [Specifications](https://www.broadcom.com/products/pcie-switches-retimers/pcie-switches/pex8748#specifications)
- [Documentation](https://www.broadcom.com/products/pcie-switches-retimers/pcie-switches/pex8748#documentation)
- [Downloads](https://www.broadcom.com/products/pcie-switches-retimers/pcie-switches/pex8748#downloads)
The ExpressLane™ PEX 8748 is a 48-lane, 12-port, PCIe Gen 3 switch device developed on 40nm technology. PEX 8748 offers Multi-Host PCI Express switching capability that enables users to connect multiple hosts to their respective endpoints via scalable, high-bandwidth, non-blocking interconnection to a wide variety of applications including servers, storage, communications, and graphics platforms. The PEX 8748 is well suited for fan-out, aggregation, and peer-to-peer traffic patterns. Included is PLX's proprietary visionPAK debug software, which allows, for example, internal receive-eye observation after equalization and access to the devices' internal debug registers thus enabling faster time to market.
| Title | Date | Download | Alert |
| --- | --- | --- | --- |
| PEX8748 Product Overview
Version:
1
Language:
English | 10/01/2010 | [Download](https://docs.broadcom.com/docs/12351855)
(386.1 KB) | |
## Lifecycle Status
Active
| Specification | Value |
|--------------------------------|--------------|
| Lifecycle | Active |
| Distributor Inventory | No |
| ACS/ARI | Yes |
| DMA | -- |
| Dual/Multi Cast | MC |
| Lanes | 48 |
| Latency | 150ns |
| Multi-Root/Multi-Host | 6 |
| Non-Transparency | 1 |
| Packaging Size | 27mm X 27mm |
| PCI-SIG® Base Spec. | r3.0 |
| Port Count | 12 |
| Power Typ. | 7.3 |
| Read Pacing | Yes |
| SSC (Spread Spectrum Clocking) | 12 |
| Temperature | 0°C +70°C |
| Virtual Channels | 1 |
### Application Notes
| Title | Date | Download | Alert |
|---------------------------------------------------------------|------------|------------------------------------------------------------------------------------------|----------------|
| Using a PCIe Switch as a Bandwidth Bridge | 11/30/2011 | [Download](https://docs.broadcom.com/docs/bandwidth_bridge_using_pex_8604_v1.0_31mar10.pdf) | |
### Design Guide
| Title | Date | Download | Alert |
|-----------------------------------------|------------|------------------------------------------------------------------------------------------|----------------|
| PCB Layout Review Guide | 04/25/2015 | [Download](https://docs.broadcom.com/docs/pcie-pcb-layout-review) | |
### Errata
| Title | Date | Download | Alert |
|-----------------------------------------------------------------|------------|-------------------------------------------------------------------------------------------------------------|----------------|
| PEX 8749/48/47/33/32/25/24/23/17/16/13/12 Errata | 01/15/2021 | [Download](https://docs.broadcom.com/docs/PEX8749-48-47-33-32-25-24-23-17-16-13-12-Errata-and-Cautions) | |
### Product Brief
| Title | Date | Download | Alert |
|-----------------------------|------------|------------------------------------------------------------------------------------------|----------------|
| PEX8748 Product Overview | 10/01/2010 | [Download](https://docs.broadcom.com/docs/12351855) | |
### Selection Guide
| Title | Date | Download | Alert |
|-------------------------------------------|------------|----------------------------------------------------------------------------------------|----------------|
| Complete PCI Express Product Listing | 07/13/2023 | [Download](https://docs.broadcom.com/docs/BC00-0445EN) | |
### White Papers
| Title | Date | Download | Alert |
|---------------------------------------------------------------------------------|------------|---------------------------------------------------------------------------------------|----------------|
| Proof of concept high-performance PCIe Gen3 over optical cable with no special software or hardware | 04/28/2012 | [Download](https://docs.broadcom.com/docs/pcie-pofoveropticalcable-whitepaper) | |
### Software Development Kit
**7**
| Title | Date | Download | Alert |
| --- | --- | --- | --- |
| PEX Device Editor for Linux
This is the same PEX device Editor GUI that is currently available on Windows which has been ported to Java to run on Linux. Please refer to the Readme for installation instructions.
Version:
8.23
OS
Linux
Language:
English | 11/18/2020 | [Download](https://docs.broadcom.com/docs/PEX-Device-Editor-for-Linux)
(82.7 MB) | |
| PCI/PCIe SDK Windows Complete Package
This package contains the complete PCI/PCIe SDK in a Windows self-extracting executable. This includes support for Windows, Linux, and all PCI/PCIe SDK Manuals.
Version:
8.23
OS
Windows and Linux
Language:
English | 11/18/2020 | [Download](https://docs.broadcom.com/docs/SDK-Complete-Package)
(108.9 MB) | |
| Title | Date | Download | Alert |
|--------------------------------|------------|---------------------------------------------------------------------------------------|----------------|
| PEX Device Editor for Linux | 11/18/2020 | [Download](https://docs.broadcom.com/docs/PEX-Device-Editor-for-Linux) | |
| PCI/PCIe SDK Windows Complete Package | 11/18/2020 | [Download](https://docs.broadcom.com/docs/SDK-Complete-Package) | |
## Also of Interest
- [PCIe SwitchesPEX 8747](https://www.broadcom.com/products/pcie-switches-retimers/pcie-switches/pex8747)
- [PEX 8749 48-Lane, 18-Port PCI Express (8 GT/s)...](https://www.broadcom.com/products/pcie-switches-retimers/pcie-switches/pex8749)
- [PEX 8750](https://www.broadcom.com/products/pcie-switches-retimers/pcie-switches/pex8750)