Occasionally, internal firmware issues can prevent the controller from starting correctly. How to Update and Fix xHCI Drivers on Dell
| Symptom | Likely Cause | Dell-Specific Fix | |---------|--------------|-------------------| | USB 3.0 drives work at USB 2.0 speeds | Legacy USB support enabled in BIOS | Disable “Legacy USB Support” → keep “Enable USB 3.0” | | Port stops working after sleep | Power management (Windows) | Device Manager → xHCI → Power Management → uncheck “Allow computer to turn off” | | Error 10 (cannot start) in Device Manager | Corrupt driver or conflicting Intel MEI driver | Run Dell Command Update; reinstall chipset driver | | External USB hub disconnects randomly | xHCI hand-off issue | BIOS → “XHCI Hand-off” → Enabled | | “USB Controller Resources Exhausted” | Too many isochronous devices (audio/video) | Increase PCI buffer (Dell Precision BIOS) | usb if xhci usb host controller dell
: Supports data transfer rates up to 5 Gbps for USB 3.0, 10 Gbps for USB 3.1, and 20 Gbps for USB 3.2. 10 Gbps for USB 3.1
Dell provides specific driver packages based on the controller's manufacturer (usually Intel or ASMedia): usb if xhci usb host controller dell