Qnap TS-412U specs

CPU - Marvell 6281 1.2GHz

DRAM - 256MB DDRII RAM

Flash Memory - 16MB

Hard Disk Drive - 4 x 3.5" or 2.5” SATA I/II hard disk drive (HDD)

Hard Disk Tray - 4 x hot-swappable and lockable tray

LAN Port - 2 x Gigabit RJ-45 Ethernet port

LED Indicators - USB, Status, HDD 1, HDD 2, HDD 3, HDD 4, LAN

USB - 4 x USB 2.0 port (Front: 1; Back: 3)

Supports USB printer, disk, pen drive, USB hub, and USB UPS, etc.

eSATA - 2 x eSATA port (Back)

Buttons - System: Power button, USB one-touch-backup button, reset button

Alarm Buzzer - System warning

Form Factor - Rackmount

Dimensions - 44(H) x 439(W) x 483(D) mm; 1.73(H) x 16.97(W) x 19.02(D) inch

Weight - Net weight: 6.7 Kg (14.77 lb)

Gross weight: 9.5 Kg (20.94 lb)

Power Consumption (W) - Sleep mode: 15W

In operation: 29W (with 4 x 500GB HDD installed)

Temperature - 0-40˚C/ 32-104°F

Relative Humidity - 0-95% R.H.

Power Supply - Input: 100-240V AC, 50/60Hz, Output: 250W

Fan - 3 x quiet cooling fan (4 cm, 12V DC)

Operating System

Embedded Linux
Supported Operating System

Microsoft Windows 2000, XP, Vista (32/ 64 bit), Windows 7 (32/ 64 bit), Windows Server 2003/ 2008
Apple Mac OS X
Linux & Unix
Supported Web Browsers

Internet Explorer 7 & 8 or later
Firefox 3 or later
Safari 3 & 4 or later
Google Chrome
Multilingual Support

Chinese (Traditional & Simplified), Czech, Danish, Dutch, English, Finnish, French, German, Italian, Japanese, Korean, Norwegian, Polish, Russian, Spanish, Swedish, Turkish.
File System

Internal HDD: EXT3, EXT4
External HDD: EXT3, EXT4, NTFS, FAT32, HFS+
Networking

TCP/IP (IPv4 & IPv6: Dual Stack)
Dual Gigabit NICs with Jumbo Frame
Multi-IP Setting, Port Trunking/ NIC Teaming (Modes: Balance-rr, Active Backup, Balance XOR, Broadcast, IEEE 802.3ad/ Link Aggregation, Balance-tlb and Balance-alb.)
DHCP Client, DHCP Server
Protocols: CIFS/SMB, AFP (3.1), NFS, FTP, HTTP, HTTPS, Telnet, SSH, iSCSI and SNMP.
Network Service Discovery (UPnP, Bonjour)
USB Wi-Fi 802.11n Adapter Support (Optional Purchase)
Network File Sharing

CIFS/SMB (Plus DFS Support)
AFP
NFS
FTP
WebDAV
Backup Solution

USB One Touch Backup (Import/Export)
Apple Time Machine Support with Backup Management
Block-level Remote Replication
Work as Both Rsync Server & Client
Supports Encrypted Replication between QNAP NAS Servers
Back up to External Storage Device
Back up to Cloud Storage (Amazon S3 & ElephantDrive)
Security

IP Filter & Policy-based Automatic IP Blocking
Network Access Protection with Auto-blocking
Encrypted Access: HTTPS, FTP with SSL/TLS (Explicit), SSH/ SFTP (admin only), Encrypted Remote Replication (Rysnc over SSH)
CIFS Host Access Control for Shared Folders
Importable SSL Certificate
Instant Alert via E-mail, SMS
Disk Management

Single Disk, JBOD, RAID 0 / 1 / 5 / 5+Hot Spare / 6 / 10
Online RAID Capacity Expansion & Level Migration
Bad Block Scan & HDD S.M.A.R.T
RAID Recovery
Bitmap Support
Supports ISO Mounting (via Web File Manager)
iSCSI (IP SAN)

iSCSI Target
Multi-LUNs per Target
Up to 256 LUNs
Supports LUN Mapping & Masking
Supports SPC-3 Persistent Reservation
Supports MPIO & MC/S
Virtual Disk Drive (via iSCSI Initiator)
Stack Chaining Master
Max. Virtual Disk Drives: 8
Power Management

Scheduled Power on/off (Max 15 settings)
Automatic Power on after Power Recovery
Access Right Management

Max User Accounts: 4,096
Max Groups: 512
Max. Share Folder: 512
Batch Creating Users
Import/ Export User
User Quota Management
Subfolder Permissions Support
Windows AD Support

Domain Users Login via CIFS/SMB, AFP, FTP and Web File Manager
Supports NTLMv2 Authentication
Web Administration

AJAX-based User Interface
HTTP/HTTPS Connections
Alert Notification (Email & SMS)
Smart Fan Control
DDNS & MyCloudNAS Remote Access
SNMP (v2 & v3)
UPS Support with SNMP Management (USB)
Supports Network UPS
Resource Monitor
Network Recycle Bin for CIFS/SMB and AFP
Comprehensive Logs (Events & Connection)
Real-time Online User List
Syslog Client
Firmware Update with Live Update Notification
Backup and Restore System Settings
Restore to Factory Default
Applications

Web File Manager
Multimedia Station
Download Station
Surveillance Station
iTunes Server
Apache Web Server
MySQL Server
Mobile App

QMobile for iPhone/ iPad/ Android
3rd Party UPnP Media Player
QPKG

Web Applications
Joomla!
phpMyAdmin
WordPress
AjaXplorer
vtigerCRM
eyeOS
Magento
GLPI
P2P Applications
MLDonkey (eMule)
SABnzbd+
NZBGet
Server Applications
Asterisk
XDove (Mail Server)
OpenLDAP
Media Server
Squeezebox Server
IceStation
Misc.
Optware IPKG
Python
iStat