28• GeneralPower source: WJ-NX400K: 120 V AC, 60 HzWJ-NX400K/G: 220 V to 240 V AC, 50 Hz/60 HzPower consumption: WJ-NX400K: 125 W (230 VA)WJ-NX400K/G: 125 W (245 VA)Ambient operating temperature: Main body: +5 °C - +45 °C {41 °F - 113 °F}Mouse (accessory): +5 °C - +40 °C {41 °F - 104 °F}Ambient operating humidity: 5 % to 90 % (non condensing)Maximum operating altitude: 2000 m {6562 feet} above sea levelRecording compression method: H.265, H.264, JPEGDimensions: 430 mm (W) × 132 mm (H) × 413 mm (D) (From Rack Mount Bracket 400 mm){16-15/16 inches (W) × 5-3/16 inches (H) × 16-4/16 inches (D)} (excluding rubberfeet and projections)Mass: When no HDD is installed: 11.5 kg {25.4 lbs}When 9 HDDs are installed: 20 kg {44.1 lbs}Finish: Front view: Solid metallic coating, ResinTop cover: Solid metallic coating, Zinc-coated steelRear view: Zinc-coated steel• Hard disk drive (Contact your dealer about purchasing hard disk drives.)Hard disk drive: 3.5-inch hard disk drive (Up to 9 hard disk drives can be installed.)RAID1 (Available only when 2 or more hard disk drives are installed.)RAID5 (Available only when 3 or more hard disk drives are installed.)RAID6 (Available only when 4 or more hard disk drives are installed.)• Input/OutputVideo: Video output connector: 1 V [p-p]/75 Ω, ×1 (BNC)Monitor (HDMI) connector: HDMI, ×2 (19-pin, type A)Main monitor3840 × 2160 (4K) p/30 Hz3840 × 2160 (4K) p/25 Hz1920 × 1080 p/60 Hz1920 × 1080 i /60 Hz1920 × 1080 p/50 Hz1920 × 1080 i /50 Hz720 × 480 p/60 Hz720 × 576 p/50 HzSub monitor1920 × 1080 p/60 Hz1920 × 1080 i /60 Hz1920 × 1080 p/50 Hz1920 × 1080 i /50 Hz720 × 480 p/60 Hz720 × 576 p/50 HzAudio: Audio output connector: −10 dBv, 600 Ω, unbalanced ×1 (RCA pin jack)Mouse connection port: High-speed serial interface, 480 Mbps (theoretical value), USB2.0, ×2Copy port: High-speed serial interface, 5 Gbps (theoretical value), USB3.0, ×2External storage: High-speed serial interface, 5 Gbps (theoretical value), ×5Alarm IN connector: Alarm input 1-32* 1 (Terminal plug (16-pin) ×2)Alarm/Control connector: Network error output*2 , Alarm reset input*1, Emergency recording input*1, Outage detection input*2,External recording mode switching input*1, HDD error output*2, Camera error output*2, Recordererror output*2 , Recording error output*2, Time adjustment I/O*1*2, Alarm output*2 , Outageprocessing end output*4, +5 V output*3 (Terminal plug (12 pin) ×2)Specifications