NOTE: This item come without retail box Preduct Description1.A free USB2.0 port 2.Windows 2000 /Windows XP /Windows 73.Intel Pentium III 800 above4.Memory: 256 or more5.At least 1024X768 screen resolution6.600MB of disk space for program installation、 we recommend a more than4GB of hard disk space for software stored video filesMicrosoft DirectX 9.0 (Windows 2000 recommended installation)Microsoft Media Player 7.1 (Windows 2000 recommended installation) Video telephones、 security surveillance video conferencing、 card making、computer camera、 fingerprint analysis、 video mail、 bank Yan Yin、 medicalanalysisU disk size