This Pioneer Photo Albums USB Flash Drive Organizer allows you to label, store & protect 4 of your standard size USB thumb drives for easy access. Use built-in sliding mechanisms to connect multiple organizers (sold separately) and hold unlimited USB flash drives! The tray comes with slots for four USB flash drives, and nubs for their caps. There's a notepad in front of each slot so that you can jot down identifying information for the drive. You can even attach a label to the drive for a quick glance of the drive's content. The USB Flash Drive Organizer is designed for photographers, videographers, teachers, or students who use multiple flash drives to store photos, documents, or music.