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Windows 11/10 has been getting a lot of useful features. These features released are both consumer-based and developer-based. Along with this, they have not missed improvising the old features. One of these features is USB Selective Suspend feature.
What is USB Selective Suspend feature in Windows?In Windows OS, the Selective Suspend feature allows the system to save power by putting certain USB ports into a suspended mode. It lets the hub driver suspend a single port but does not affect the functioning of other ports. For instance, it’s similar to how users put their laptops or other devices in Sleep Mode – Selective Suspend is almost like that. The feature which makes it so interesting is that it can suspend a specific USB port individually, without affecting the power of the entire USB port. However, the driver for the USB device must support Selective Suspend for it to run right.
The USB Core Stack supports a modified revision of the Universal Serial Bus Specification and is called ‘selective suspend’. This allows the Hub Driver to suspend a port and help conserve the battery. Suspending services like Fingerprint Reader, etc., which are not required all the time, helps improve power consumption. The behavior of this feature is different for devices operating in Windows XP and kept improving in Windows Vista and later versions.
Users don’t really need this on a system that is already charging and can avail of the plug-in power whenever it needs to. This is why Windows lets users enable the USB Selective Suspend based on the computer’s plug-in or battery. But the Selective Suspend feature isn’t exactly a requirement on a desktop machine that is plugged into power. When a USB port is powered down, it doesn’t necessarily save that much of power on a desktop. That’s why Windows allows you to enable or disable USB Selective Suspend based on the computer being plugged in or on battery power. This feature is incredibly helpful in portable computers for power-saving purposes.
How to enable or disable USB Selective SuspendSome users have reported that at times the USB port does not get turned back on after Selective Suspend has been applied. Or sometimes even turns itself off without warning. To fix this, you need to disable the USB Selective Suspend feature on your system. Here’s how you can do it:
Related: USB Suspend:USB Device not Entering Selective Suspend
Via Power OptionsOpen Control Panel on your Windows PC. To do this, search for Control Panel in the search box.
Now a new and more detailed box of Advanced power options will appear. There will be a menu that says USB Settings.
Expand that option, and you will find two sub-options there that will be labeled as On Battery and On Power.
You can choose to enable both of them individually as per your choice.
Related: Selective Suspend causes USB devices on USB hub to stop functioning.
Using Windows RegistryTo disable the Selective Suspend feature via the Registry Editor, do the following:
Since this is a registry operation, it is recommended that you back up the registry or create a system restore point as necessary precautionary measures. Once done, you can proceed as follows:
Press Windows key + R to invoke the Run dialog.
In the Run dialog box, type regedit and hit Enter to open Registry Editor.
Navigate or jump to the registry key path below:
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesUSB
Input 1 in the Value data field.
Exit Registry Editor.
Restart your PC.
In our next post, we will see what you can do if the USB Selective Suspend is disabled.
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