The license you need depends on the filesystem you are recovering data from.

• To recover data from a photo camera memory card, or a USB thumbdrive, you need a Standard license (these use FAT or exFAT filesystems).
• If your disk or disk set was directly attached to a Windows PC (internal drive or external hard drive), you still need a Standard license (Windows PCs use FAT and NTFS filesystems; Windows servers use ReFS which is also covered by Standard)
• If your disk or disk set comes from an Apple Mac, from a Linux server, or from any kind of a NAS, you need an Ultimate license.