Acer Predator 15 User Manual page 62

62 - Universal Serial Bus (USB)
or turned off. Additionally, you can use a USB hub to
connect multiple devices to a single USB port.
Important
When removing a USB storage device, you should right-click on
the USB icon in the Windows task bar and select "Eject <device>"
to tell the operating system to stop using the device before
removing it. Failure to do this may result in data loss or damage
to your peripheral.