Ultimate reliability - Built from the ground up with the quality and reliability you've come to expect from WD.

Your options are endless - Choose the diskless enclosure with easy drive install and hot swap to effortlessly add up to four drives and grow as your needs expand. Or, choose a populated system that works right out of the box, featuring WD Red hard drives for ultimate compatibility in the unique 24x7 NAS operating environment.

High-performance NAS - Dual Ethernet and power supply ports; 512 MB memory and 2.0 GHz processor deliver reliable, blazing-fast performance for your home or small office.

Drive management and data protection at its best - You're armed with multiple options to secure your data from loss. Choose RAID 0, 1, 5, 10 or select from spanning and JBOD modes for even more options to manage your data.

Easy to manage - A powerful dashboard and LCD display means your system is always under your control. Monitor your drives, manage users, and utilize energy-saving features. Email and mobile alerts keep you informed on My Cloud EX4 status.

Award-winning desktop and mobile apps - With WD's My Cloud mobile and desktop apps, you can upload, access and share your documents from anywhere. Conveniently transfer files from your public cloud service to the My Cloud EX4 directly from the mobile app.

Powerful apps to customize your NAS - Featuring industry-leading apps, including aMule, Icecast, Joomla!, phpBB, phpMyAdmin, and SqueezeCenter.

Advanced serving options - Integrated file server, FTP server, backup server and P2P torrent download server.

Stream media to your connected devices - Stream videos and photos to connected TVs, media players, gaming consoles and other DLNA/UPnP devices. Features a Twonky 7.2 and a DLNA-certified 1.5 media server. And with My Cloud EX4's iTunes server, you can easily stream your music collection.

Back up, your way - Protect your data with remote backup to another My Cloud EX4, integrated cloud backup or local LAN/WAN backup. PC users, WD SmartWare Pro offers options for how, when and where you back up your files for up to ten computers. Mac users, utilize all the features of Apple Time Machine backup software to protect your data.

Increase your personal cloud capacity - Simply attach a compatible USB hard drive directly to one of the two USB 3.0 expansion ports on My Cloud EX4 and instantly expand your storage capacity.

Integrated energy-saving features - Save money on your energy bill with disk spin-down and scheduled power on/off.

Your own personal cloud - Unlike public clouds, My Cloud EX4 allows you to keep all your content in one safe place on your home or office network instead of a remote server. No mysterious location of your data. No monthly fees. No limits. Just blazing-fast performance for your high-speed digital life.

Advanced features - iSCSI target, full-featured FTP services, link aggregation and failover support, jumbo frame support, iPv6 ready, UPS support (USB and network), real time resource monitor, volume encryption with boot-up password, SNMP, and virtual volumes.

My Cloud EX4 personal cloud storage products work concurrently with multiple operating systems including Mac OS, Windows 8, iOS and Android with mobile apps.

Ideal for

• Centralizing and organizing your data in one secure location
• Securing your data from loss with customizable disk management and multiple RAID options
• Backing up files automatically from all the PC and Mac computers on your network
• Streaming all your media files on your network
• Quickly installing drives with ease
• Saving, backing up and sharing your stored content from anywhere
• Accessing and saving files securely from any computer, tablet, and smartphone
• Uploading photos and videos directly to your personal cloud to free up space on your mobile devices
• Transferring files between your public cloud accounts and My Cloud EX4

What's in the box
Four-bay personal cloud storage, Ethernet cable, power supply and cable, Quick Install Guide.

Compatibility
Windows 8.1 or earlier, Windows 7, Windows Vista or Windows XP (SP 3) operating systems
Mac OS X Mavericks, Mountain Lion, Lion or Snow Leopard operating systems
DLNA/UPnP devices for streaming
Internet connection for remote access

Supported Browsers
Internet Explorer 8 or higher
Safari 6 or higher
Firefox 21 or higher
Google Chrome 27 or higher on supported Windows and Mac OS platforms

Note: Compatibility may vary depending on user's hardware configuration and operating system.