Highest capacity for audio/video storageWD AV SATA drives now offer unrivaled storage capacity up to 4 TB perfect for todays storage intensive applications.24x7 reliabilityThese drives are designed to last in high temperature always-on streaming digital audio/video environments such as PVR DVR and IPTV systems.SilkStreamOptimized for smooth continuous digital video playback of up to 16 simultaneous HD streams. SilkStream is compatible with the ATA streaming command set so CE customers can use standard streaming management and error recovery options.Low power consumptionWD AV drives consume less power by up to 40 percent compared to 7200 RPM hard drives. Lower power means less heat and greater reliability.Low Capacity and 2.5-inch SurveillanceWD AV drives offer 500 GB and lower capacities suitable for low profile entry level surveillance systems requiring reliability in always-on environments.IntelliSeekCalculates optimum seek speeds to lower power consumption noise and vibration.IntelliPowerA fine-tuned balance of spin speed transfer rate and caching algorithms designed to deliver both significant power savings and solid performance. (3.5-inch models only).Advanced Format TechnologyLeading edge technology delivers improved video quality and AV performance through enhanced error correction capability. (EURS/EURX/AUDX/xxCT models only)Ultra-cool operationA cool drive is a more reliable drive. WD continues to develop new and innovative ways to keep drives cool while they are operating.QuietNoise levels have been minimized to less than one sone - virtually below the threshold of human hearing.Preemptive Wear Leveling (PWL)The drive arm frequently sweeps across the disk to reduce uneven wear on the drive surface common to audio video streaming applications.The WD advantageWD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. This testing ensures our products consistently meet the highest quality and reliability standards of the WD brand. WD also has a detailed Knowledge Base with more than 1000 helpful articles as well as helpful software and utilities. Our customer support lines have longer operational hours to ensure you get the help you need when you need it. Our toll-free customer support lines are here to help or you can access our WD Support site for additional details.Recommended useSet-top boxes (PVR DVR NVR and IPTV) media servers and media centers.