... Video Server*Video Resolution: D1/Half-D1/CIF/QCIF*HDD storage, 2TB maximum*802.11b/g WIFI network (optional ... liner input, Impedance:1KOhmsAudio Output1channel,RCA port, linear outputAudio talk-back input1 channel ,MIC portOverlaid CaptionChannel, Date, Bit rate. position ... (support wireless model)Storage interfaceBuilt-in standard SATA port for HDD. Support SD card storage and snapshot, SD2.0 standard ...