Windows 10 Pro. | Full Retail Version. USB Flash and License key. | You can choose 32- or 64- bit version during installation. | Minimum hard disk space: Up to 20 GB available hard disk space, Minimum RAM: 1 GB RAM for 32-bit; 2 GB for 64-bit, Minimum processor speed: 1 GHz., Language version: ENG, Media type: USB Flash.