Very easy to use! Just plug in to your computer's USB Port; it's a self-starter. Your computer recognizes its presence immediately. Please read the Readme.txt and User Manual PDF files on the drive which can be found by clicking on the drive's icon in File Explorer if you're using Windows. You will need to run WD Discovery.exe to get additional WD software and help configure your WD Passport drive to fit your needs/preferences. There are instructions for Mac users in said text file. ABOVE ALL ELSE: DO NOT CONNECT YOUR DRIVE TO A POWERED USB HUB! Your computer cannot power off the hub and, consequently, your Passport drive. If you attempt to disconnect your drive from the hub by disconnecting the drive's USB cable, you run the risk of pulling it just when the drive's light starts flashing again. This can happen even if you use Windows "Safely Remove..." app/feature or if you remove power from the hub by disconnecting its power cord.. It could possibly corrupt the data on your drive and cause your computer to not recognize your WD Passport the next time you start your computer and the drive is connected. This happened to me a couple of days after I had installed my drive, and it gave me quite a scare! Fortunately, I was able to get my computer to recognize the drive and no data was lost. Because of my experience with almost losing my data on the drive, and the possibility that the drive could have been damaged, I heartily recommend to all that you read your device's supporting documentation before installing the unit. Follow those guidelines and your toy will serve you well for a long tiime! Yes, I know: Physician, heal thyself...

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