DVR Card Key Specifications/Special Features: Input type: D-type: DB15 x 2 BNC: BNC x 4 Video input: 4, 8, 12 and 16 cams Audio input: 1-channel Resolution: 320 x 240 pixels Frame rate: NTSC: 30fps PAL: 25fps Compression formats: MPEG4 and H264 V2 Supports GV-DSP and GV-A16 Supports GV-NET and GV-NET/IO cards OS: Windows 2000, XP, Server 2003 and Vista CPU: Pentium 4 to 2.0GHz with hyper-threading or above RAM: 512MB HDD: 80GB Supports Direct 9.0 OS or above