LinkStation™ 420 

Buffalo's LinkStation 420 offers high performance, feature rich network storage and backup for all PC and Mac® computers on your home network at speeds up to 80+ MB/s. Simply connect it to your wireless router for access anywhere in your home or on-the-go. Enjoy your movies, music, photos and more.

  • High Performance - Up to 3X Faster than a Standard NAS Device*
  • Consolidate storage and back up your PC and Mac® computers
  • Set up automatic data protection with RAID 1 mirroring
  • Create a free personal cloud for access to your files anytime, anywhere over the internet
  • Access files from your tablet and smartphone devices
  • Intuitive user interface and easy-to-use setup wizard
  • DLNA Certified™, iTunes® and PS3™ media server functionality
  • Built-in BitTorrent client for simplified file downloading and management
  • USB port for backup or printer sharing
  • LinkStation™ NAS System



Buffalo's LinkStation 420 is a high performance 2-drive network storage device that comes equipped with a whole host of features, perfect for storing, sharing, serving and protecting your most important data. Back up multiple PCs and Mac computers simultaneously and enjoy uninterrupted access to terabytes of storage on your network and even over the Internet while away from home.


LinkStation 420 features five licenses of NovaBACKUP® Workstation - Buffalo Edition and Time Machine® support for Mac for whole home data backup. Disaster and hard drive failures happen unexpectedly; don't leave your important files and treasured memories in the hands of chance. Schedule backups for every computer in your house and easily protect all of your data, down to the very last byte.


LinkStation 420 features two hard drives and support for RAID 0/1 for maximum capacity or redundant data protection.

  • RAID 0 combines all drives into a single array offering maximum capacity with no redundancy
  • RAID 1 mirrors the two drives, creating an exact copy of data for fault tolerance


Equipped with a high performance 1.2 GHz dual issue ARM processor and DDR3 RAM, LinkStation 420 offers much more than simple home shared storage. This 2-drive network storage device boasts transfer speeds up to 80+ MB/s, nearly twice as fast as a USB 2.0 drive and three times faster than a standard NAS device.


While on the go, Buffalo's free WebAccess service allows you to create a personal cloud for easy remote access and file sharing with anyone, anywhere over the Internet. Your data remains securely stored in one place on your home or small office network, but you can access it quickly from any computer, tablet or smartphone device over the Web.

For enhanced access on your iPhone®, iPod® touch, iPad and Android™ devices, download Buffalo's free WebAccess mobile apps.

WebAccess i for iPhone® and iPod® touch
WebAccess i HD for iPad®
WebAccess A for Android™


LinkStation 420 is DLNA Certified and it can be used as an iTunes server to stream all of your favorite music, movies and shows to multiple devices simultaneously. Now you can relax and watch movies on your big screen TV while music is pumped outdoors by the pool. Centralize your media files for simple sharing and streaming.


With terabytes of storage, LinkStation 420 provides a reliable, central location to store all data from every PC and Mac computer, tablet device and smartphone in your home or small office. Store, access and share files from anywhere over your wireless network at speeds up to three times as fast as a standard NAS device.


The LinkStation 420 comes equipped with two USB ports, allowing users to increase storage capacity and/or backup to another device for an extra level of data protection.


LinkStation 420 runs on Buffalo's LinkStation NAS System, providing a host of useful features from network file sharing and security to RAID management, remote access and more. Included on all Buffalo LinkStation devices, LinkStation NAS System simplifies your everyday data needs.


Internal Hard Drives

Number of Drives 2
Drive Interface SATA 3 Gbps
Hard Drive Sizes 1 TB, 2 TB, 4 TB
Supported RAID 0/1/JBOD (Individual Disks)

LAN Interface

Standards Compliance (10BASE-T)IEEE802.3, (100BASE-TX)IEEE802.3u, (1000BASE-T)IEEE802.3ab
Data Transfer Rates 10 / 100 / 1000 Mbps
Connector Type RJ-45
Number of Ports 1

USB Interface

Standards Compliance USB 2.0
Data Transfer Rates 480 Mbps* (USB 2.0)
Connector Type A Type
Number of Ports 1 x USB 2.0

* 480 Mbps is the maximum transfer rate derived from the specifications of the Universal Serial Bus 2.0. Actual transfer rate will vary depending upon environmental factors. Data rate, features and performance may vary based on the configuration of your system and other factors.

Protocol Support

Networking TCP/IP
Management HTTP/HTTPS


Dimensions (L x W x H) 8.07 x 3.43 x 5.02 in
Weight 5.29 lbs
Power Consumption Max 48W
Power Supply External AC 100-240V Universal, 50/60Hz
Client OS Support Windows® 10
Windows® 8 (32-bit/64-bit)
Windows® 7 (32-bit/64-bit)
Windows Vista® (32-bit/64-bit)
Windows® XP
Windows® 2000
Windows Server® 2012
Windows Server® 2008
Windows Server® 2003
Windows® 2000 Server
Mac OS® X up to 10.10*

*Some included optional utilities are not supported. The HDD default format is NTFS; to work with Mac, reformat the HDD using Mac Disk Utility.




    File Size Post Date Version OS Support Notes
2019-02-12 1.86 Windows Firmware for the LS400 Series Linkstation
2019-02-12 1.86 Mac Firmware Updater for Linkstation 400 Series


    File Size Post Date Version OS Support Notes
2016-25-04 User Manuals and Quick Setup Guides for LS410/LS420/LS421DE LinkStations
2019-02-12 1.86 Windows Readme for Linkstation 400 Series Firmware - Windows
2019-02-12 1.86 Mac Readme for Linkstation 400 Series Firmware - Macintosh
2020-16-01 3.00 Windows Readme for NAS Navigator for Windows
2019-18-07 2.99 Windows Lisez-moi pour NAS Navigator pour Windows (français)
2019-18-07 2.99 Mac Readme for NAS Navigator for Mac NOTE: For users running MacOS 10.13 or later, download and install the latest version of NAS Navigator2 from Mac App Store.
2019-18-07 2.99 Mac Lisez-moi pour NAS Navigator pour Mac (français) REMARQUE: pour les utilisateurs d'ordinateurs sous MacOS 10.13 ou ultérieur, téléchargez et installez la dernière version de NAS Navigator2 à partir du Mac App Store.
2016-25-04 1.20 Windows Readme for LinkNavigator for LS400 for Windows
2016-25-04 1.20 Mac Readme for LinkNavigator for LS400 for Mac


    File Size Post Date Version OS Support Notes
2020-16-01 3.00 Windows NAS Navigator for Windows
2019-18-07 2.99 Mac NAS Navigator for Mac NOTE: For users running MacOS 10.13 or later, download and install the latest version of NAS Navigator2 from Mac App Store.
64.92 MB 2016-25-04 1.20 Windows LinkNavigator for LS400 Windows
17.69 MB 2016-25-04 1.20 Mac LinkNavigator for LS400 for Mac
2016-25-04 14.1.11 Windows NovaBACKUP Professional for Windows


LinkStation™ 410 2TB

  • - 1
  • - 2

LinkStation™ 410 3TB

  • - 1
  • - 3

LinkStation™ 410 4TB

  • - 1
  • - 4

LinkStation™ 420 2TB

  • - 2
  • - 2

LinkStation™ 420 4TB

  • - 2
  • - 4

LinkStation™ 420 8TB

  • - 2
  • - 8

LinkStation™ 421 Enclosure

  • - 2

LinkStation™ 441 Enclosure

  • - 4