With an SSD duo pack, you'll get 2 identical internal SSDs. This provides double the storage capacity, or allows you to store files in RAID mode. With an SSD RAID, you can store all your movies, games, and photos extra securely, or improve the speed. As a nice bonus, you'll also get a discount on an SSD 2-pack. Be sure to check if your need an 2.5-inch SSD, NVMe M.2 SSD, or a SATA M.2 SSD. Otherwise, it won't fit in your device.