WD Purple 4TB Surveillance... Price $171.60 WD Purple 3TB Surveillance... Price $132.00 DC Power Splitter LTA2011 -... Price $2.20 Male BNC Twist-On Type RG59... Price $0.55 Pigtail Male Adapter LTA2010 Price $0.33 CABLE RG59 SIAMESE 500 FT Price $66.00 WD Purple 1TB Surveillance... Price $62.70 DC Power Splitter LTA2018 -... Price $3.30 CABLE RG59 SIAMESE 1000 FT Price $121.00 Connector BNC Adapter... Price $0.55 Engineered specifically for surveillance security systems. Supports up to 180TB/year workload rate. Tuned for write-intensive, low bit-rate, high stream-count applications typical to most surveillance applications. Prioritized write-operations for maximized surveillance performance. TLER & ATA streaming support. Support for more than eight bays.