Works for Laptop and CCTV DVR 2.5" Form Factor Low power WD AV-25 hard drives are the cool, quiet and reliable storage choice for demanding always-on read/write applications. With a SATA 6 Gb/s interface, 16 MB cache and 1TBGB capacity this 2.5-inch drive is Ideal for DVRs, digital video surveillance and other small form environments where power consumption is critical. 24x7 - These drives are designed to last in always-on streaming digital audio/video environments such as DVR/PVR, digital video surveillance and other demanding multimedia applications. Optimized for smooth, continuous digital video playback of up to five simultaneous HD streams. SilkStream is compatible with the ATA streaming command set so AV customers can use standard streaming management and error recovery options. Quiet - Noise levels have been minimized to virtually below the threshold of human hearing. Low power consumption - The drive draws less than 2W while operating and a mere 4.75W during spin up. 1TB capacity holds up to 200,000 digital photos, 250,000 MP3 files, and 120 hours of HD video. Recommended use: Laptop, USB External Enclousre, Set-top boxes (PVR, DVR, NVR and IPTV), media servers and media centers. Specification: Manufacturer Western Digital Manufacturer Part # WD10JUCX Data Storage Formatted Capacity 1TB Data Transfer Rate To/From Media 6.0 Gb/s Buffer 16 MB Cache Seek Time Average 8.9 ms Rotational Speed 5400 RPM Interface SATA 6.0Gb/s Pack (H x W x D) Unit 2.75 in Bul x 3.75 in x 0.37 in Weight Unit 1 lbs Warranty 3