ASUS Vivobook S15 Intel Core Ultra 5 125H USB Not Working Fix Windows 11

USB ports on your ASUS Vivobook S15 Intel Core Ultra 5 125H are not working – USB devices connected to the ports are not detected, USB drives do not appear in File Explorer, or mouse and keyboard receivers stop functioning after the laptop wakes from sleep. USB controller driver updates and power management settings restore USB functionality on the ASUS Vivobook S15.

This guide covers Intel USB controller driver updates, USB power management settings, and port troubleshooting for the ASUS Vivobook S15 Intel Core Ultra 5 125H in Windows 11.

“Vivobook S15 USB ports stopped working after sleep. Unplugging and replugging USB devices helped sometimes but not always. Disabled USB root hub power saving in Device Manager. USB devices now reconnect immediately when laptop wakes from sleep.” – Rizwana, accountant from Kota Kinabalu

Why USB Does Not Work on ASUS Vivobook S15

The ASUS Vivobook S15 USB ports are managed by the Intel USB controller via USB Root Hub. Windows USB Root Hub power management can turn off USB ports after a period of no USB activity – when a device is plugged in after the port was powered off, the device may not be detected because the port is still in the power-off state. This is most noticeable after sleep/wake cycles where the USB Root Hub does not fully reinitialize all ports on wake, leaving some ports unpowered and invisible to USB device detection. A driver update and power management change resolve this persistent USB intermittent detection issue.

• USB Root Hub power saving turning off ports during idle, not restarting after sleep/wake
• Intel USB 3.x controller driver outdated after Windows Update
• USB device requiring more power than port provides (500mA limit on some USB 2.0 ports)
• Specific USB port physically damaged – test across all available USB ports

Fix 1 – Disable USB Root Hub Power Saving

Open Device Manager – Universal Serial Bus controllers. Right-click each USB Root Hub listed – Properties – Power Management. Uncheck Allow the computer to turn off this device to save power. Click OK. Repeat for all USB Root Hub entries in the list. After disabling power saving on all root hubs, restart the Vivobook S15. USB devices now stay connected through sleep/wake cycles because the root hub power is maintained. This is the most effective fix for USB devices not detected after sleep on the Vivobook S15 Intel Core Ultra 5 125H with Windows 11 Modern Standby power management.

Fix 2 – Update Intel USB Controller Driver

Go to asus.com/support and search for Vivobook S15 with your model number. Download Intel USB 3.x Controller driver or Intel Chipset Software for Windows 11. Install and restart. Updated Intel USB controller drivers for the Meteor Lake (Core Ultra 5 125H) platform include improved USB power state transition handling that prevents the post-sleep USB device not detected issue. Also update Intel Thunderbolt driver if listed under the USB category, as Thunderbolt driver updates affect USB-C port detection reliability on the Vivobook S15.

Test USB Ports Individually

Test a known-working USB device (USB flash drive or USB mouse) in each port of the Vivobook S15 individually. If only specific ports fail while others work, the non-working ports may have a different USB controller channel or a physical connection issue. The Vivobook S15 Intel Core Ultra 5 125H has multiple USB host controllers managing different port groups – a driver issue affecting one controller leaves other ports functional, while power saving affects all ports managed by a single root hub simultaneously. Individual port testing identifies whether the issue is systemic (all ports) or isolated (specific ports).

Fix 3 – Disable USB Selective Suspend

Open Control Panel – Power Options – Change plan settings – Change advanced power settings. Under USB settings – USB selective suspend setting, change to Disabled for both On battery and Plugged in. USB Selective Suspend is a Windows power feature that individually suspends USB devices when not in use, rather than the entire Root Hub. While similar to Root Hub power saving, Selective Suspend operates at individual device level and can cause connected USB devices to appear disconnected after a suspend event. Disabling both USB Selective Suspend and USB Root Hub power saving provides comprehensive USB disconnection prevention on the Vivobook S15.

Fix 4 – Run USB Troubleshooter

Go to Settings – System – Troubleshoot – Other troubleshooters. Find and run Hardware and Devices or USB troubleshooter. The hardware troubleshooter scans for USB devices with driver errors, USB ports in error state, and USB controller initialization failures. If the troubleshooter identifies a specific USB device or controller in error state, it attempts automatic repair by resetting the USB hub hierarchy. For persistent USB issues that power management and driver changes do not resolve, the troubleshooter output identifies the specific Device ID and error code that guides targeted driver reinstallation on the ASUS Vivobook S15.

Frequently Asked Questions

Why is USB not working on ASUS Vivobook S15 Intel Core Ultra 5 125H?

USB Root Hub power saving turning off ports after idle or sleep. Disable in Device Manager – USB Root Hub Properties – Power Management for all root hubs listed.

How do I fix USB ports on ASUS Vivobook S15?

Disable USB Root Hub power saving in Device Manager, disable USB Selective Suspend in Power Options, update Intel USB controller driver from ASUS Support.

Does ASUS Vivobook S15 Intel Core Ultra 5 125H have USB-C?

Yes – USB-C with USB 3.2 Gen 2 (10Gbps) and DisplayPort alt mode. Thunderbolt 4 availability depends on specific configuration.

Why does ASUS Vivobook S15 not recognize USB devices?

USB Root Hub power saving turning off ports when idle. Disable in Device Manager USB Root Hub Properties. Try different USB port to isolate specific port vs systemic issue.

Conclusion

ASUS Vivobook S15 Intel Core Ultra 5 125H USB not working in Windows 11 is resolved by disabling USB Root Hub power saving in Device Manager for all USB Root Hub entries, preventing sleep/wake USB device detection failures. USB Selective Suspend disabled in Power Options provides additional device-level USB power management prevention. Intel USB controller driver update from ASUS Support improves post-sleep USB port reinitialization reliability. Individual port testing identifies physical port damage or controller-specific issues requiring targeted driver reinstallation or hardware service.