HTC One M8 for Windows - Manual (Page 162)

OneDrive
OneDrive is the one place you need for all your photos, music, videos,
documents, and more. Think of it as a central storage location that helps
you to transfer stuff between all of your Windows devices so you can keep
your files in sync and minimize duplicates—all with one Microsoft account.
To browse your OneDrive, go the App List and tap OneDrive. You'll see all
your files you uploaded right there.
162 Storage