Asustor AS4002T 2-Bay NAS




The 10GbE NAS Storage Solution. Built with only two speeds, FAST and EXTREME.

  • ASUS motherboard quality
  • Marvell 1.6GHz CPU
  • 2GB of DDR4 RAM at 2400Mhz, fast and efficient.
  • Dual gigabit Ethernet with the addition of a 10gbE port.
  • All new diamond cut exterior
  • Magnetic dust-proof cover
  • Supports two hot-swappable HDDs
  • Screwless, Toolfree installation
  • Hot-swappable
  • 3 year warranty, best in class



A New Look!

Enhanced dust prevention, cooling and stability.

A New Look!<br/> <small>Enhanced dust prevention, cooling and stability.</small>

The AS40 series diamond-cut exterior has a magnetic cover for easy access to hard drives within. Its front panel hexagonal design creates a lightweight, yet strong frame for added durability and protection. The AS40 series also comes with a better cooling design, allowing for better airflow, allowing for higher longevity and lower failure rates.

Its front panel hexagonal design creates a lightweight, yet strong frame for added durability and protection.


The AS40 series diamond-cut exterior has a magnetic cover for easy access to hard drives within.


The AS40 series also comes with a better cooling design, allowing for better airflow, allowing for higher longevity and lower failure rates.


Toolfree Installation

Toolfree Installation

ASUSTOR’s AS40 series introduces its new tool-free caddies as a way to simplify installation of hard drives. Each NAS comes included with brackets to install the drive easily. On the AS4000 series, hot-swapping of hard drives is supported, allowing you to change hard drives easily without powering down the NAS.

PC-less Software Installation

PC-less Software Installation

Mobile installation with AiMaster takes only 3 steps! Finding your NAS, system initialization and installation, power management, ADM firmware updates, system information and more are all available from the convenience of your mobile device at any time.

Dual Core 64bit CPU and DDR4 RAM

Dual Core 64bit CPU and DDR4 RAM

The Marvell 64bit CPU found inside the AS40 series contains two cores clocked at 1.6Ghz powered by the ARM Cortex A72 microarchitecture. Compared with the Cortex-A15 core, the Cortex-A72 is three and a half times faster while providing seventy-five percent reduced power. The 64bit architecture supports up to 16TB on a single volume. The AS40 series also supports DDR4 RAM soldered onto the motherboard, providing even faster bandwidth and lower power consumption than DDR3.

Unlimited potential 10gbps speeds

Unlimited potential<br/><small>10gbps speeds </small>

ASUSTOR’s AS40 series of NAS are the first line of consumer NAS made by ASUSTOR to feature 10gbps of bandwidth over Ethernet. Our 10gbps Ethernet port uses RJ45 which are different from SFP+ as it is more accessible to consumers, and flexible with different Ethernet speeds and standards.

Up to 3gbps of aggregated performance

<small>Up to 3gbps of aggregated performance</small>

The AS40 series of NAS can provide up to 3gbps of aggregated performance. Even without 10gbps switch or router, connecting all Ethernet ports (two gigabit, one 10gb) of the AS40 series simultaneously and enabling Link Aggregation feature can combines 3 gigabit network connections into one.

Brand New Interface Design Elements and Flexible Use of Desktop Space

Brand New Interface Design Elements and Flexible Use of Desktop Space

ADM 3.0 provides a flexibly designed desktop layout that can provide an optimal configuration based on the display resolution. Furthermore, convenient App organization provided by the grouping function allows users to experience management that is very much like a tablet device.

Ultra-quiet operation

Ultra-quiet operation

The AS40 series devices produce only 19 decibels of noise during system standby, equivalent to the almost inaudible sound of a pin drop. During system operation, only 32 decibels of noise is produced, equivalent to the hushed tones of a quiet library, allowing the AS40 series devices to seamlessly and comfortably integrate into any living environment.

24/7 reliability and durability

24/7 reliability and durability

All ASUSTOR NAS are designed for and are suitable for 24/7 use. ASUSTOR NAS devices have also undergone rigorous tests, such as drop tests and burn tests to test durability in extreme conditions. Heatsinks were added to sensitive components to dissipate heat, helping to maintain the longevity of the device.

Save power to save money

Save power to save money

ASUSTOR NAS products are designed and developed around ecologically friendly concepts. When in use, our devices consume far less power than the average computer or server. Furthermore, our advanced power control features allow you to more efficiently manage your NAS device and hard drives. This lowers your electric bill and prolongs the lifespan of your hard drives all at the same time. While in disk hibernation, the AS4002T consumes only 12.7 W of power. Under normal operating conditions it still only consumes 19.5 W of power.

Cross-Platform Multi-User Access

The ASUSTOR NAS provides seamless cross-platform and multi-user access, allowing you to easily connect to your NAS from Windows, Mac OS X or Unix-like operating systems no matter if you are using a PC, notebook, tablet or smartphone.

Comprehensive Backup Solutions

Comprehensive Backup Solutions

The AS40 provides over 12 different backup options and is connected to a variety of public cloud storage services including Amazon S3, Dropbox, Google Drive, OneDrive,, HiDrive, Ralus, WonderBox, xCloud and CrashPlan. You can also use FTP Explorer, USB external hard drive enclosures, external hard drives and local backup to ensure proper backup for your data. No matter if you are using Windows, Mac or Linux, ASUSTOR provides the proper tools for your backup needs. MyArchive cold backup technology turns NAS hard disks into removable storage archives. Directly insert a MyArchive hard disk into the NAS to easily access, backup and share terabytes of content.

Exclusive MyArchive Cold Backup Technology Unlimited Capacity Expansion

Exclusive MyArchive Cold Backup Technology<br/>Unlimited Capacity Expansion

MyArchive cold backup technology turns NAS hard disks into removable storage archives. Directly insert a MyArchive hard disk into the NAS to easily access, backup and share terabytes of content.

Effortless Connections to Your NAS

Effortless Connections to Your NAS

ADM 3.0 provides easy connections by supporting a new Internet Passthrough function that helps users to simplify previously complex router configurations. Even if users with mobile devices are under local network or multi-router environments, all they need to do is upgrade their apps to the latest version supporting ADM 3.0 and they will be able to easily connect to their NAS to access their data from anywhere and at any time. For computer users, they only need to install the new ASUSTOR EZ Connect (AEC) utility to utilize the Internet Passthrough function and conveniently connect to their NAS at home. Furthermore, they will also be use AEC to map their NAS to their computer as a network drive for convenient access.

Multi-Layered Protection from the Outside in

Multi-Layered Protection from the Outside in

ASUSTOR NAS ensures data security by creating an in-depth data protection plan that protects your data from the outside in. Utilization of a multi-layered deployment scheme allows for the achievement of active network, system and data protection.

Mobile Apps

Mobile Apps

ASUSTOR’s exclusive Cloud Connect technology allows you to connect to your NAS from anywhere with your Mobile device in order to access and share your files. ASUSTOR mobile apps provide pass code lock functions in order to protect your privacy and data. You can also make use of HTTPS connections for even more added security.

App Central

App Central

Unleash the unlimited potential of ASUSTOR NAS. The applications that come pre-installed with each ASUSTOR NAS device are just the beginning. At your convenience, you can browse through and download any applications that pique your interest from App Central. Whether your interests lie in business, website construction or even digital home entertainment, App Central has got you covered. With over 200 unique Apps, App Central provides you with the boundless variety of applications that you require to satisfy your digital lifestyle needs. Explore the unlimited potential of ASUSTOR NAS devices while creating a personalized NAS device for yourself.

First-Class Product Warranty

First-Class Product Warranty

All ASUSTOR NAS products come with a 3-year warranty. ASUSTOR continues to make customer service a priority in providing the highest standard of after-sales service and technical support.


Hardware & Packaging


Hardware Specifications



Intel Celeron 1.6GHz Dual-Core (burst up to 2.48GHz) Processor

AES-NI hardware encryption engine integrated


Hardware acceleration engine supported format

H.264 (AVC), H.265 (HEVC), MPEG-4 Part 2, MPEG-2, VC-1



Memory Expandable up to

not expandable

Flash Memory



2 x SATA3 6Gb/s; 3.5" HDD Compatibility

Maximum Internal Raw Capacity

28 TB (14 TB HDD X 2, Capacity may vary by RAID types)

Maximum Drive Bays with Expansion Unit


Maximum Raw Capacity with Expansion Units

140 TB (14 TB HDD X 14, Capacity may vary by RAID types)


USB 3.1 Gen-1 x 3


Gigabit Ethernet x 2


HDMI 1.4b x 1

System Fan

70mm x 1

Infrared Receiver


Power Supply Unit / Adapter

65W x1

Input Power Voltage

100V to 240V AC




Power Consumption: 19.5W (Operation);


8.1W (Disk Hibernation);


0.89W (Sleep Mode) ²


Noise Level: 18.6dB (HDD idle)


Operation Temperature: 0°C~40°C (32°F~104°F)


Humidity: 5% to 95% RH

ASUSTOR Hightlight

System Migration


EZ Connect




2-way Backup


Task Monitor

Eco-Friendly Design

System Automatically Enters Sleep Mode (Schedule S3)


Auto-Standby for Both Internal and External Disks


Auto Fan Control


LED Night Mode


Power Schedule: On, Off, Restart, and Sleep.

Size and Weight

Size: 165(H) x 102(W) x 218(D) mm


Weight: 1.6kg / 3.53 lbPackage Contents

Software & Features


Operating System

ADM 3.1 Onwards


Supports Online Firmware Updates

Supported OS

Windows XP, Vista, 7, 8, 10, Server 2003, Server 2008, Server 2012


Mac OS X 10.6 Onwards


UNIX, Linux, and BSD

Supported Languages


Supported Browsers

Internet Explore 11 Onwards








Microsoft Edge

Network Protocols

CIFS / SMB, SMB 2.0 / 3.0, AFP, NFS, FTP (Unicode Supported), TFTP, WebDAV, Rsync, SSH, SFTP, iSCSI/IP-SAN, HTTP, HTTPS, Proxy, SNMP, Syslog

File System

Internal Disk: EXT4


External Disk: FAT32, NTFS, EXT3, EXT4, HFS+, exFAT

File Explorer

Web-based File Management


ISO File Mounting


Share Links


Task Monitor


Browse Files on Local PC


Thumbnail Previews


Data Access via External Optical Drive


Supports video playback¹⁰

Storage Management

Support Multiple Volumes with Spare Disks


Volume Type: Single disk, JBOD, RAID 0, RAID 1


Support for Online RAID Level Migration

iSCSI Read/Write (5GB file, 1GbE x 1)/IP-SAN

Maximum Targets: 256


Maximum LUNs: 256


Maximum Snapshot Versions of a Single LUN: 256


Target Masking


LUN Mapping


ISO File Mounting


Supports MPIO


Persistent (SCSI-3) Reservations

Customized Sign In Page

2 Different Template Choices


Customizable Title, Imageand Background


Image Import Function

Disk Management

Scheduled Bad Block Scans


Scheduled S.M.A.R.T Scans

Energy Control

Configurable Disk Hibernation and Sleep Mode Wait Time


Configurable Time Period for Sleep Mode Activation


Automatic Sleep


TCP/IP (IPv4 & IPv6)


Jumbo Frame (MTU)




EZ Connect


Wireless Network³


DDNS and EZ-RouterCompatibility


Supports Wake-on-LAN (WOL)

Backup Solutions

Rsync (Remote Sync) Backup


Cloud Backup


FTP Backup


External Backup

System Administration

Log Type: System Log, Connection Log, File Access Log


Real-time Online User Monitor


Real-time System Monitor


User Quota


Virtual Drive (ISO Mounting, Maximum 16)


UPS SupportCompatibility

Network Recycle Bin

Share folder-based


Maintains original directory structure and file permission


On-click restore


Supports scheduled emptying


Filtering rules


File size


File extension

Access Control

Maximum Number of Users: 4096


Maximum Number of Groups: 512


Maximum Number of Shared Folders: 512


Maximum Number of Concurrent Connections: 512


Supports Windows Active Directory


Supports Windows Active Directory / LDAP


Provides both Windows ACL and Linux ACL permission configuration methods


Can enable Windows ACL for specific shared folders


Comprehensive support for Windows’ 13 types of advanced permission settings


Can view Windows ACL permission settings from within ADM


Supports local users and groups


Exclusive permission reset function allows users to quickly restore default permissions

SSD Cache

SSD-like performance with traditional hard drives


supports read-only access and read-write cache mode


Supported Models: AS31/32/50/51/61/62/63/64/70 series


AES 256-Bit Encryption


Firewall: Prevent Unauthorized Access


Alert Notifications: E-mail, SMS


Encrypted Connections: HTTPS, FTP over SSL/TLS, SSH, SFTP, Rsync over SSH


Built-in Hardware Encryption Engine: AS70/64/63//62/61/31/32/10 Series

Network Defender

Auto black list


Trusted list


Black/White list


Supports IP/IP range/geolocation

External Devices Compatibility

Supports USB External Storage Devices


USB Wi-Fi Dongle Support


Bluetooth Dongle/Speaker Support


USB Printer Support


USB DAC/IR Receiver/Keyboard/Mouse Support


CD ROM Drive/DVD ROM Drive/Blu-Ray ROM

Featured Apps



Scheduled Scans


Automatic Virus Definition Updates


Quarantine Infected Files

ASUSTOR Portal(HDMI Local Output)⁶

Supports Output for 4 Channels of Megapixel IP Camera Video Feeds


Support Chrome / Chromium browsers.


Downloads from Chrome/Chromium Automatically Saved to the NAS


Power Control Settings: Power on, Sleep, Restart and Wake via Remote


Customizable ASUSTOR Portal Desktop Wallpaper


Add Shortcuts to Favorite Websites


Increased TV Compatibility via Overscan and Resolution Settings


Max. Resolution: 1080p(HD)/2160p(4k)⁷


ASUSTOR Portal comes preloaded with Netflix and Youtube. Users can install the supplementary URL-Pack to get access to even more popular video streaming sites such as Plex, Vimeo and Youku.


After installing URL-Pack-Social, users will be able to choose between social media sites such as Facebook, Google+, Hangouts, Pinterest, Twitter, Linkedin, WhatsApp and Instagram.


Virtual Machines are Able to run the Following Operating Systems: Windows, Linux, Solaris, Mac OS X


Virtual Machine Import Format: OVF


Virtual Machine Export Format: OVF 0.9, OVF 1.0, OVF 2.0


Virtual Machine Snapshots


Virtual Machine HDMI Audio Output


Physical NAS Network Port can be Designated for use by Specific Virtual Machine

Linux Center

Integrate NAS operating system with Linux


Easy installation with just one touch


HDMI output on command

Download Center

Supports BT(Torrent & Magnet Link), HTTP and FTP Downloads


Torrent Search


Choose Files Before a BT Task Starts


Customizable Download Schedule


Bandwidth Control


RSS Subscription and Automatic Downloading (Broadcatching)


ASUSTOR Download Assistant for Windows & Mac


AiDownload for iOS & Android with Push Notification


Smart Download Function

DataSync for Microsoft OneDrive

Each ADM account is able to individually log into a OneDrive account


Supports file filter and bandwidth limitation


Supported backup methods:




Directly upload files to OneDrive from NAS


Directly download files from OneDrive to NAS


Each ADM Account is Able to Individually Log in to One Dropbox Account


Supported Backup Methods:




Dropbox to NAS


NAS to Dropbox

FTP Explorer

Directory Structure View with Drag & Drop Transfers


Task Monitor


Stopping of Transmission Task & Resumption of Connection


Encrypted Connections: Explicit over TLS, Implicit over TLS


FTP Site Manager


Bandwidth Control


Maximum Simultaneous Transfer Control

Google Drive

Each ADM Account is Able to Individually Log in to One Google Account


Supported Backup Methods:




Directly Upload Files to Google Drive from NAS


Directly Download Files from Google Drive to NAS


Support OneDrive and OneDrive Business


Each ADM Account is Able to Individually Log in to One HiDrive Account


Supported Backup Methods:


Directly Upload Files to HiDrive from NAS


Directly Download Files from HiDrive to NAS


Supported Protocols:










Rsync + SSH


Each ADM Account is Able to Individually Log in to One hubiC Account


Supported Backup Methods:




Directly Upload Files to hubiC from NAS


Directly Download Files from hubiC to NAS


Each ADM Account is Able to Individually Log in to One Yandex Account


Supported Backup Methods:




Directly Upload Files to Yandex from NAS


Directly Download Files from Yandex to NAS

LooksGood Transcoding Capabilities

Built-in three main video library categories (Movies, TV Shows, Home Movies) and smart video sorting management


Efficient Global Search function allows for searches by keywords followed by the execution of more detailed searches according to the Movies, TV Shows, Home Movies categories and parameters such as actors, director, year, genre, writer, and title


Attractive poster wall and thumbnail display


Automatic production of video poster thumbnails


Centralized management and ability t o configure order of favorites and playlist history


System administrator can configur e video library and editing permissions according to user


Can configure access permissions to share with


friends and family


Multimedia conversion function


Self-defined smart folder for video conversions


Supports digital TV recordings via digital TV dongles


Easy streaming with Chromecast and DLNA


Support to watch videos in Apple TV via AiVideos tvOS version

Supported browsers

Windows Edge / Chrome / Firefox, Mac Safari

Supported video formats


Supported video codec

H.264 (AVC), H.265 (HEVC), MPEG-2, VC-1

Supported external subtitle formats

srt, ass, ssa, vtt

Supported photo formats

jpg, jpeg, bmp, png, gif, tif

Supported TV stick TV standards


Series supporting hardware transcoding


iTunes Server

For iTunes on Mac & Windows


Supports AirPlay


Supports iOS Remote Pairing


Supported Audio Formats: AIF⁵, M4A (AAC & Apple Loseless), M4P, M4R, MP3, WAV⁵


Supported Video Formats: M4V, MOV, MP4


Supported Playlist Formats: M3U, WPL

Mail Server

Each ADM Account can Become an Independent Email Account


Email Activity Monitor (Over 1 Week, 1/3/6 Months)


Provides SMTP, IMAP and POP3 Mail Protocols


Supports SMTP Relay and Verification


SMTP-SSL Secure Connections


Spam Filter and Black List Settings


Antivirus Scanning for Emails


Email Alias Creation and Mapping


Monitoring of Mail Queue


Mail Service Activity Log


Exclusive Email Backup Mechanism


Auto-Forwarding and Auto-Response Protocols

Photo Gallery

“Album” and “Browse” Viewing Modes


Manage Photo Album Access Rights: Public Access, Restricted to Certain Accounts, Album Password


Multi-level Folder Structure Support


Supports Tagging of Photos


Intuitive Sorting and Comprehensive Search Function


Adjustable Photo Wall Browsing Scales


Automatic Image Rotation


One-click Sharing to Social Media (Facebook, Google+, Twitter, Plurk, email)


Intuitive Drag and Drop Management


Slideshow Viewing Mode


Provides Comment Function for Users to Interact with Each Other.


Supports a Wide Range of Image Formats: JPG/JPEG, GIF, PNG, BMP, TIFF, RAW


Supports Video Playback

Surveillance Center Compatibility

Up to 25 channels in 720p on single live view display


On-screen camera controls including camera PTZ, manual recordings, take snapshots, configure camera settings and open Maps


Up to 4 channels of synchronous and non-synchronous playback with audio


Intelligent video analytics including motion detection and foreign object detection


Supported Browsers: Windows Internet Explorer, Microsoft Edge, Firefox, Mac Safari, Mac Firefox ESR


Event notification supports SMS, E-mail, and mobile push notification


Automated event action rules


Role-based access control


RTSP streaming server (video and audio)


AiSecure mobile app for iOS and Android with Push notification


ONVIF™ 2.4, Profile S certified


CMS Lite supports connect up to 128 IP Cameras from 32 NAS


Two different camera license packages are offered: single channel and 4 channels.


Maximum IP Cam (4 Free Licenses; Additional Licenses to be Purchased)


Minimum PC Client Requirements


CPU: i5/i7 or above


RAM: DDR3 4G or above


Operating system Windows 7 and onward, Mac OS X


Windows browsers: Internet Explorer, Microsoft Edge, Chrome, FireFox


Mac browsers: Safari 7.0, Firefox


Display resolution: 1280x800 pixels or higher for best user experience


Network interface: Gigabit x1


Independent graphics card is highly recommend


Import Personal/Public Music Collection


Personal/Public Music Collection Permission Control


Playlist Editor


ID3 Tag Editor


Local Speaker Support: HDMI, USB, Audio Jack


Supported Audio Formats for Browser: MP3, WAV, Ogg


Supported Audio Formats for Transcoding Through Browser: AIFF, Flac


Supported Audio Formats for Local Speaker: MP3, WAV, Ogg, AIFF, Flac


ASUS DAC Support


Download from YouTube, Vimeo, YouKu, Tudou and More


Selectable the Video Type and Quality


Automatic Downloads with YouTube Subscriptions


Preview Downloads in Progress


Online Playback

UPnP Media Server

Supports PS3 and other Digital Media Player Capable Devices


Supports On-The-Fly Transcoding for Most RAW Images and Audio(OGG, FLAC)


Supported Image Formats: BMP, GIF, ICO, JPG, PNG, PSD, TIF, RAW Image⁴ (3FR, ARW, CR2, CRW, DCR, DNG, ERF, KDC, MEF, MOS, MRW, NEF, NRW, ORF, PEF, RAF, RAW, RW2, SR2, X3F)

VPN Client

Supported VPN Protocols: PPTP, OpenVPN


Transmission Package Monitor


PPTP Authentication: PAP, CHAP, MS CHAP, MS CHAP2


PPTP Encryption: No MPPE, MPPE (40, 128 bit), Maximum MPPE (128 bit)


OpenVPN Port Control


OpenVPN Link Compression

VPN Server

Supported VPN Protocols: PPTP, OpenVPN, and IPsec


View Current Connections & Ability to Disconnect Suspicious Connections


Comprehensive Connection Log


Centralized management of wireless network certification


Using WPA-Enterprise or WPA2-Enterprise encryption


Must be combined with a wireless router that supports RADIUS authentication

SNMP Server

Supports SNMP v1, v2c, v3 and trap



Syslog server

Supports standard syslog protocol


Graphical log monitoring by time and device


Supports TCP and UDP


Auto log archiving


User-defined email notification

No additional files, specification sheets, guides or documentation found for product.

Warranty: 36

Full manufacturers warranty details are available at the manufacturers web site.

Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

To apply for return of a product just go to our returns page.

These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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