Dear AOPVISION I buy on eBay store a AOP-416a DVR card. Unfotunately the item run poor. The images on realtime is color dashed, poor sharpness , not details. I tray many pc based on Windows XO PRO , without any satisfaction. The PSc is: 1) Motherboard: ASUS M2PNV + AMD M2 3800+ + 1 GB DDR2 ram + Videocard Geforce 6600 2) Motherboard : Asrock 775i65G + Celeron 341 + 512 DDR ram + Nvidia FX5200 Videocard The serial number of the AOP DVR card is 20071100651 Please help me ! RGS from Riccardo