Check the listing for details. Samsung SRD-1670 500MB - 16 Channel Premium DVR. Condition: Used. Listed at 179.95 USD. 500GB HARD DRIVEVideo:Video compression formats: AVI, H.264, MPEGDisplay resolution: 704 x 576 pixelsDisplay frame rate: 480 fpsAnalog signal format system: NTSC, PALPorts & interfaces:BNC input ports: 1USB 2.0 ports quantity: 2Ethernet LAN (RJ-45) ports quantity: 1RS-485 ports: 1eSATA ports quantity: 1RS-232 port: 1VGA (D-Sub) output ports: 1Disk Drive:Number of hard drives supported: 4Host interface: SATAMaximum hard drive capacity: 16000 GBOptical Drive:Optical drive included: Yes: Optical drive type: DVD-RWPackaging Data:Handheld remote control: Yes: Networking: Ethernet interface type: GigabitSupported network protocols:TCP/IP, ARP, ICMP, DHCP, PPPoE, UDP, SMTP, FTP, SNTP, HTTP, DNS, DDNS, RTP, RTSP, SOAPColor:Color of product: BlackTechnical Details:Channels quantity: 16Weight & Dimensions:Dimensions (WxDxH): 17.5 x 15.3 x 3.46 " (445 x 388 x 88 mm)Weight: 352.7 oz (10 kg)Operational Conditions:Operating temperature range (T-T): 5 - 40 °COperating relative humidity range: 0 - 60 %