PCIe expansionProduct link
StarTech Four-controller USB 5Gbps card
PEXUSB3S44V
Give bandwidth-sensitive USB instruments separate host controllers.
- Interface
- PCIe x4
- Format
- Standard height + low-profile bracket
PCIe / StarTech.comHARDWARE EDIT
Category illustration · not a product photograph
PCIE EXPANSION / PEXUSB3S2EI
StarTech USB 5Gbps card with internal header
Add external ports while connecting a compatible front-panel USB header.
IN YOUR WORKFLOWWorkstation I/O expansion
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THE DETAILS THAT MATTER
At a glance.
- Brand
- StarTech.com
- Model
- PEXUSB3S2EI
- Interface
- PCIe x1
- Form factor
- Standard height + low-profile bracket
- Ports
- 4
- Connection
- 2 external USB-A + internal header
- Link rate
- 5 Gbps
- Controller
- Renesas/NEC - PD720201
Direct PCIe evidence
Debug the controller’s PCIe side first.
StarTech USB 5Gbps card with internal header is a PCIe host controller. The workbench can inspect its host connection while USB peripherals, power delivery and port behavior remain separate checks.
- Confirm the required slot, auxiliary power, motherboard headers and firmware support. Identify the controller’s PCI address on the Linux host.
- Import its collector JSON into the workbench. Review enumeration, driver binding, resources and current versus maximum PCIe link values.
- If relevant errors appear, add the controller’s AER or IOMMU log lines and compare a known-good capture. Test downstream ports and peripherals with their supported operating-system tools.
Header7F inspects PCIe evidence. It does not enumerate USB devices, negotiate USB4/Thunderbolt authorization, test power delivery or certify a cable’s data rate.