Charging your smartphone from a powered-down computer‘s USB port

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We will need to make changes in the BIOS settings, then the USB port will charge any device connected to it, while the computer itself will be off. The problem is that by default this function is disabled. Our job is to enable this feature and make use of its capabilities.

Many modern phones, especially those brought from abroad, charge from the USB input of the computer or laptop. Charging by means of a charger is impossible for them for a number of reasons. This suits users who have a PC at home or at work. Therefore it is very actual a question of possibility to charge the phone if the computer is switched off. For example, the phone battery is at zero in the evening and the computer is already off. So now to leave PC turned on at night? Not necessarily. There is a way out of this situation.

We need to change the BIOS setup so that the USB port can charge any device plugged into it while the computer itself is powered off. The problem is that this feature is disabled by default. Our task is to enable this function and use its features.

The sequence of user actions will be as follows:

In the BIOS menu you will need to locate the “Advanced” section. All sections are located at the top of the screen as a horizontal menu.

Next you need to find the subsection “AdvancedPowerManagement”. This will be a vertical menu.

In the menu of the submenu find the “Legacy USB Support” line. You will see the “Auto” option next to it. Change this and set the value to “Enabled”. You do this by pressing Enter and then using the cursors.

Exit from BIOS settings and save your settings. Usually the F10 key is pressed for this.

After the above steps, you can safely disconnect your computer and connect the device to the USB port to charge.

How to charge your phone in sleep mode or with the laptop lid closed.

We all know that when the laptop is on (working), all the USB ports get power and we can charge the phone by plugging them into the laptop. But what if you want to charge your phone when your laptop is off? That is, if you need to charge your iPhone or Android phone when your laptop is off or in hibernation mode?

We usually charge our phones by connecting them to our computers. This works well if you are working or playing while charging. You may have noticed if you close the lid of your laptop or your computer goes to sleep, your phone stops charging.

You can charge your phone, or any other USB device, from your notebook even when your notebook is turned off, as long as your notebook supports this feature. That is, not all laptops send power to the USB ports when they are turned off. The device shuts off the battery even if your phone stays connected to your laptop.

If your laptop supports this feature, one or more of the USB ports on your laptop will continue to receive power even after the laptop is turned off. There may be an icon next to the USB port indicating that the USB port is receiving power even when the laptop is turned off. For example, the ThinkPad 450s has a battery icon next to one of the USB ports on the left to indicate that it’s getting power even when the laptop isn’t running.

If none of the USB ports are receiving power when the laptop is turned off, check your BIOS settings, there is usually a setting in the BIOS to enable and disable this feature. You can also check the user manual for your laptop or contact the manufacturer to see if your device powers the USB ports when it’s not working.

How to charge mobile electronics through the USB port of a Windows computer that is turned off

Many users probably still remember the old days when there were very few devices that charged from the USB ports of computers or laptops. Most have only had an iPod (well, or other player of a similar kind).

Somewhat later it was possible to charge some smartphones via USB. But now some turned into everything, plus they were added all sorts of 3G-routers, fitness trackers, portable speakers and a host of other gadgets, each of which without regular connection to USB literally can not live.

But despite the entry into the world of Windows 10, with USB the old problem has remained: as soon as the computer or laptop is turned off or goes to sleep, its USB-port also stops providing current and does not charge anything. It is true, that there have been and are still being produced Windows notebooks with USB ports functioning in sleep mode, but, as practice shows, not all users are aware of them.

So most of the users, continuing to practice the grandfather’s method of charging via USB, just leave the computer turned on every time they need to charge the smartphone or any other mobile device. This method is certainly time-tested and effective, but, unfortunately, not the most convenient and very wasteful in terms of power consumption (including the one that must be in such cases pulled from the laptop battery).

In this regard, we remind you how to charge mobile electronics through the USB-port of the turned off Windows computer, or rather how to configure your computer so that it also in hibernation mode supplied power to its USB-ports.

And before making any adjustments, always do a mini-review of the available USB ports to make sure that among them are those that are configured to run in the charger mode when the computer is off. If your computer (more precisely the motherboard) has such a function, then these so-called chargeable USB car manufacturer should have painted in a conspicuous yellow color.

And to change the power settings of the USB port, go to the Device Manager and there in the section Controllers USB. When this is displayed, you will find the Root USB Hub line.

Most likely there will be a few, but you will only need those with xHCI in the brackets. These are the USB 3 ports.0. Right-click on one of them and in the menu that appears click Properties. Go to the Power Management tab, uncheck the option Allow this device to turn off to save power, and hit OK.

Now you can charge various mobile devices via this USB even when the PC is turned off. If one is not enough, then try to connect the second (if there is one). But it is possible that you will only need one as it is not possible to enable all USB charging modes this way. Furthermore, sometimes the option to charge via USB when the PC is switched off might not activate so easily (I will not go into details why it happens). But the described method most often works.

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  • Connect the TV to your phone with a USB cable.
  • Set the TV set to the USB port as the Source of the signal.
  • If necessary confirm the connection mode on your phone.
  • The folder structure or the list of files scanned and recognized by the TV will be displayed on the large screen.

How to Connect an Android Smartphone as a USB Modem

  • Connect phone to PC via USB. If it’s a new device, wait until the driver installation is complete.
  • Open phone settings. Under “Wireless Networks” (“Network”), find “Modem Mode” (“Modem and Access Point”).
  • Activate USB-modem.

Unlock the device

In iOS and iPadOS later versions, if you use a USB accessory with your iPhone, iPad, or iPod touch, or if you connect it to a Mac or Windows computer, you may need to unlock the device to recognize and then use the accessory. The accessory will remain connected even if you later lock the device.

If you do not first unlock a password-protected iOS or iPadOS device (or if it has not been unlocked and connected to a USB accessory in the last hour), it will not communicate with the accessory or computer, and in some cases it may not charge. You may also see a notification that your device needs to be unlocked to use the accessory.

If after unlocking the device, the USB accessory is still not recognized, disconnect the device from the accessory, unlock it, and connect the accessory again.

Your iPhone, iPad, or iPod touch charges normally when it is connected to a USB power adapter.

How to Fix Charging Only When Connect Phone to PC via USB (Media Transfer)

  • Unlock the phone screen.
  • Connect the device to your computer with a USB cable.
  • On your phone, tap the “Charging device via USB” notification.
  • Select File Transfer in the USB Working Mode dialog box.
  • Drag and drop files into the window that appears.

Why can’t the computer detect your phone or tablet?

Possible causes include incorrect connection actions, outdated or incorrectly configured software, malfunction of USB cables, ports, or the device itself.

What is MTP mode and where did USB mode go?

Before Android 4.4 KitKat was able to set the USB connection as a flash drive. PC saw the device as a removable drive and granted the same rights: user could transfer files, format the drive and perform other actions.

Then in new versions of Android, USB mode was replaced by MTP, which left only the data transfer function, and the same formatting does not work.

In this mode, your Android device will work with digital camera apps that support PTP, but not MTP. Apple Mac OS X supports PTP, so you can use PTP mode to transfer photos from your Android device to Mac via USB connection without any special software.

The problem occurs regardless of the operating system installed on the PC, and is found on Windows 7, Windows 10 and “Eight”. Does not affect the brand of the motherboard: owners of Asus, MSI, Gigabyte, Asrock and other motherboards face this problem.

The point is that even in sleep mode, when computer or notebook is turned off, but not completely deenergized, i.e. uninterruptible power supply or surge protector is not switched off, USB ports are still supplied with voltage.

Many modern mice, keyboards and other peripherals are equipped with backlight. If computer or notebook stands in the same room, where you usually sleep, such illumination can banally disturb you from falling asleep.

This is more relevant than ever for modern PC users: Brain overloaded by information flow, nerves frayed by the high speed of life, and many people have problems with sleep nowadays.

The problem is much easier to solve than it seems. simply turn off the power to the USB ports in hibernation mode. One thing to clarify right away: you can not do this via command line. only in BIOS or in power management settings.

Disable or enable USB through group policy

The good thing about this method is that it disables the ability to work with removable media via USB, but the peripherals are not affected. If you have a printer, keyboard, mouse, etc.д., they will still work after this manipulation.

It is worth noting, however, that the Group Policy Tool is not present in all versions of Windows. If you see an error message when trying to open it, go to the next method, which is through the registry. It is the same.

    To open the Group Policy window we will use the Win R key combination. Pressing it will bring up a window, in which you should type “gpedit.msc” (without the quotes), and then click on OK.

And on the right side of the window, among others, you will see an item named Removable Disks: Deny Reading, double-click on it.