Sorry for not being clear in my earlier post.
Usually when recent version of Windows detect portable drive or storage device connected, it would display the safe to remove option.
This would be categorised as MSC mode.
When the computer detects the device connected as media device or cameras, it will not have option to safely remove the connected device.
This will be categorised as MTP mode.
This article should be more relevant.
http://www.howtogeek.com/69869/when-should-you-properly-eject-your-thumb-drive/