ManufacturerWestern Digital
Lowest Price $100.00 Compare Western Digital WDH2NC40000N prices
Warranty 5 years limited


RJ45 Ports1 x 10/100/1000M
USB Ports1 x USB3.0 + 2 x USB2.0
eSATA PortsYes
Other Ports1 VGA (recovery only)


Drive Bays2
Hard Disk Interface2 x SATA
Hard Disk Size4TB
Rotational Speed7200RPM


Automatic and continuous backup for all the computers on your network - Now you can easily back up data from all your networked computers with the included continuous backup software. Set it and forget it; every time you save something it\'s instantly and automatically backed up.

The double-safe place for your data - Using RAID mirroring technology, this system automatically and continuously maintains a second copy of your data for extra safe data protection. If one drive in this two-drive system ever fails, the system continues to run and your data is safe. How\'s that for peace of mind?

Centralized storage to share and stream all your family’s digital content - Built-in media server for streaming music, photos and movies to any PC, Mac or DLNA certified multimedia device such as Playstation 3, Xbox 360, wireless digital picture frames, and connected audio receivers. DLNA 1.5 & UPnP certified. Centralize your music collection and play from Macs or Windows PCs using iTunes software.

Remote access - Access your files anywhere, anytime using MioNet remote access technology from WD.

iTunes server support - Centralize your music collection and stream to a Mac or Windows PC using iTunes software.

Simple file recovery - Restore lost, damaged or older files back to their original location with a couple of clicks. Backup files are stored in the same file structure that you originally saved them, so it’s easy and intuitive to find files.

Share your personal content - MioNet remote access technology makes it easy for you to securely share photos and documents with friends and family.

USB 2.0 utility port - Turn any USB drive into an instant network drive or extra capacity for your World Edition II.

Cooler, quieter, eco-friendlier - Equipped with WD drives using WD GreenPower Technology, this system consumes significantly less power and delivers performance on par with power hungry externals using 7200 RPM hard drives.

Form Factor

Dimensions 6.5" x 6.3" x 3.9"
Weight 5.51 lbs. lbs
Form Factor Desktop


Data Link Protocol Ethernet
Network Interface Controller
DLNA Certified Yes


Standards IEEE802.3ab / IEEE802.3 / IEEE802.3u Standard
Supported Protocols CIFS/SMB for Windows
AFP 3.1 for Mac OS 9/X
NFS v2/v3 for Linux and UNIX
HTTP/S for Web browsers
Rsync and secure rsync
iSCSI target support for Windows, Mac and UNIX/Linux initiators
Processor Intel Atom single-core processor
LEDs Power/ status LEDs OLED display
Power Power Consumption*: 35W (with 2 x 2 TB)
Power Supply (Electrical): External 60W; AC Input 100-240
Temperature 5°C - 35 °C
Humidity 20-80% Humidity (non-condensing)


Operating System Windows XP/Vista
Mac OS X Tiger or Leopard
Management HTTP/HTTPS