The HD Express has the following system requirements:

• Available PCI-Express x1 slot or ExpressCard/34 slot
• Large hard disk drive (preferably at least 500 GB)
• CD-ROM disc drive for installation

For Mac OS X:

• Multi-processor or multi-core Intel Mac
• 1 GB of RAM; 2 GB or more is recommended
• Mac OS X version 10.6.8 - 10.9.5 (no current support for 10.10 or later)
• For use with Final Cut Pro 6.0.5 or later; Final Cut Pro 7.0 or later is recommended on Mac OS X v10.6 - 10.9.5 (no current support for versions of Final Cut later than 7.x)

For Windows:

• Intel Core 2 Duo, AMD Phenom II, or equivalent 64-bit processor; multiple processors or multi-core processor required
• 2 GB of RAM; 4 GB or more is recommended
• Windows 8, Windows 7, or Vista, 64-bit versions only (no current support for Windows 10)
• For use with Adobe Premiere Pro CS5 or CS5.5; version 5.0.3 or later required (no current support for versions of Premiere Pro later that CS5.5)