To disconnect a computer pen drive we are always advised to do it "safely". That is, performing this step on the computer before disconnecting the machine's memory. Does it really does something make this first step? Is something wrong if we do not ?, published i20minutes
The risk of data loss or corrupted these is real. This option to safely remove the USB was added to indicate the appropriate equipment to empty the cache, or what is the same, that no process will be interrupted and have completed all the tasks pending in the process.
This cache can be configured in Windows by going to properties usb-> policies-> quick removal. An action that disables the cache, but it can affect performance, as noted from Lifehacker.
It should also be careful with outside the cache elements, such as applications in the background that may directly affect the file or files that try to be stored in memory, as they can affect the correct saved.