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Home  >  Network Attached Storage (NAS) >  Item # WDH2NC40000N (MFR# WDH2NC40000N)
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My Book World Edition 4TB External Dual Drive
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Western Digital My Book World Edition 4TB External Dual Drive

Condition: Brand new, USA Warranty

Western Digital's My Book World Edition home network storage system offers a surprisingly simple way to store and protect all your family's important digital content and files.  Create an automatic continuous back up of all the Windows and Mac computers in your home - backup software included for up to 5 computers. Store all your digital media in one central location so everyone can access and securely share your collection from anywhere in the home.  Access your files anywhere, anytime using MioNet remote access technology from Western Digital.  My Book World Edition drives combine up to 4 TB of networked storage, a built-in media server, and remote access software to make it the most versatile and powerful product in its class.


  • Automatically back up all the PCs on your network to one central location
  • Centralize your photos, movies, and music for everyone on the network to access
  • Seamlessly backup and store data from both Windows and Mac computers with best-in-class data transfer speeds
  • Stream movies and music to your TV
  • Get files from home while at the office or traveling


  • Ethernet connection (network adapter, router, switch, or hub) 
  • Operating system: Windows XP/Vista, Mac OS X Tiger or Leopard
  • Web browser (Internet Explorer 6.0 SP1 and later on Windows platforms supported by this product, Safari 2.0 and later on Mac platforms supported by this product, Firefox 2.0 and later on supported Windows and Mac platforms)
  • Adobe Flash ActiveX 9 or higher (required for WD Discovery)
  • Broadband internet connection


Drive Comparison
My Book World Edition

My Book World Edition II

WD ShareSpace

Automatic backup

Remote access

RAID enabled

Network connection

User serviceable
  Gigabit Ethernet Gigabit Ethernet Gigabit Ethernet
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