NeatDesk (2005144) Desktop Scanner and Premium Bundle with Neat Premium Service Scanning Speed: Up to 24 PPM Color, Grayscale, B&W (300dpi, A4 size, simplex) Up to 24 PPM Grayscale, B&W (300dpi, A4 size duplex) Automatic Document Feeder (ADF): Yes ADF Capacity: Capacity with paper tray: 15 business cards + 15 receipts + 15 letter-size documents Capacity without paper tray: 50 letter-size documents Operating Systems Supported: FOR WINDOWS: Microsoft Windows 7 (32- and 64-bit) or Windows 8 Pentium IV 2.0+ GHz or faster (Dual Core recommended) 1 GB RAM; 2 GB highly recommended 1 GB of available hard disk space to installation, 1 GB recommended for user data CD-ROM drive or DVD drive required for installation Available USB port FOR MAC: Mac OS X v10.7 or later Mac computer 1 GB of RAM; 4 GB recommended 650 MB of available disk space for installation, 1 GB recommended for user data CD-ROM or DVD drive requir...