• Chassis
    Robust, stylish 2.5 mm sandblasting aluminum combined with acrylic PMMA
    Dimensions: 170 mm (H) x 90 mm (W) x 225 mm (L) = ca. 3.44 litres
    Weight: 2.2 kg net (3.1 kg with two hard disks installed) / 2.8 kg gross
    Kensington Security Slot at the back panel (also called a K-Slot 
    or Kensington lock) as a part of an anti-theft system
  • Storage Bays
    Two storage bays (storage drives not included)
    Supports 8.9 cm (3.5") drives.
    Easy hard disk installation in two trays
    Appropriate screws are included
    Each bay with one hot swap button for RAID 1
  • Hard disk support and RAID levels
    Supports two SATA storage drives each up to 4TB (or more)
    Maximum total capacity of 8TB and beyond
    Supports 8.9 cm (3.5") drives.
    Raid support: single disk, RAID 0, RAID 1 (hot swap), JBOD
    Supports hard disk spin-down timer
    Supports check/format disk, SMART information report, disk usage status report
    Hard disks must support SMART temperature feature with temperature sensor
  • Connectors
    1x Gigabit LAN (RJ45, rear)
    1x USB 3.0 (standard A, front), supports Auto-Copy function
    2x USB 2.0 (type A, rear)
    All USB ports support external devices like hard disks, flash drives, 
    printers, digital camera, etc. Memory can be shared to local network.
  • Card Reader
    Buillt-in card reader in the front panel
    Supports SD, SDHC and SDXC flash memory cards
    Supports Auto-Copy function
  • Buttons
    Main power button with status LED
    Two Omni Touch Hot Swap buttons (for HDD1, HDD2)
    Reset button (hole, rear) for admin passwort reset
  • LED Indicators
    Status LED: dual colour (access/error: blue/red)
    HDD1/HDD2 LEDs: dual colour (access/error: blue/red)
    USB 3.0 LED: single colour (access: blue)
    Card reader LED: single colour (access: blue)
    LAN speed LED (10/100 Mbps: green, 1000 Mbps: orange)
    LAN Activity LED (access/link: blinking green)
  • Transfer Speed
    Read data - from NAS to workstation: up to 75 MB/s [1]
    Write data - from workstation to NAS: up to 55 MB/s [1]
  • LAN Configuration
    Supports Static IP or Auto IP by DHCP server
  • Networking Services
    Samba Server (SMB file sharing)
    Apple File Protocol (AFP)
    Media Server/DLNA compliant
    iTunes Server
    Printer Server (supports USB printers)
    BT download without PC (scheduled)
    External device sharing (via USB or card reader)
    NTP support for scheduled time synchronization
  • APPs for mobile devices
    Upload and share files from iOS and Android devices.
    (search for the appropriate "OMNINAS" app)
  • System Services
    Firmware upgrade
    Time-Zone settings
    Factory reset function
    System log report
  • Built-in Backup functions
    Quick Auto Copy for external storage (USB 3.0 or card reader to NAS)
    NAS to USB storage backup (scheduled or immediately)
    NAS to NAS backup (scheduled or immediately)
  • CPU / RAM
    Processor: PLX NAS 7821, Dual Core ARM 11, 2x 750 MHz
    DRAM memory size: 256 MB DDR2
  • Operating System
    Embedded Linux
  • Power Adapter
    External 65 W AC/DC power adapter (fanless)
    Input voltage: 100~240 V AC, 50~60 Hz
    Automatic AC voltage adjustment
    Input current:  max. 1.6 A (1.0 A) for 100 V (240 V) input voltage
    Output: 19 V DC, max. 3.42 A
    DC Connector: 5.5/2.5 mm (outer/inner diameter)
    Dimensions: 108 mm x 30 mm x 46.5 mm (without cable)
  • Cooling fan and temperature control
    Ultra-quiet 70 mm cooling fan.
    By default the fan is not activated under normal temperature conditions.
    The following criteria depicts the system fan behavior dependend on the 
    internal hard disks temperature:
    up to 54 °C: fan is off
    55~59 °C: fan rotates at low speed
    60~61 °C: fan rotates at middle speed
    62 °C and above: system shuts down
    The System also shuts down when the system temperature exceeds 65 °C. [2]
  • Accessories
    Quick Installation Guide
    AC Power adapter (65 W) with AC power cord (plug depends on region)
    Ethernet cable, ca. 150 cm
    Driver CDROM with NAS finder software (Windows & Mac) and documentation
    DVD with Acronis True Image Personal Backup Software [3]
    Screws for hard disk installation
  • System Requirements
    - Workstation OS: MS Windows XP SP3, Mac OS X 10.4, Apple Safari 3.0, 
    Linux kernel 2.6.x or later
    - Smart phone OS: iOS 4.2, Android 2.3 or later
    - Browser: MS Internet Explorer 7.0, Firefox 3.x, Google Chrome, Apple Safari 3.0 or later
    - Router for Internet connection
  • Power Consumption
    Standby mode: 9 W
    Normal operation: 15.5 W
    Maximum load: 21 W
  • Standby Mode
    After a certain time of inactivity the system will enter power saving (standby) mode.
    This time can be set under: Settings - General - Power Saving Time Setting
    You can select a time from 10 min up to 5h.
  • Environmental Spec
    Operating temperature range: 5~35 °C (41~95 °F)
    Relative humidity range: 10~90% (non-condensing)
  • CE Compliance
    This device is classed as a technical information equipment (ITE) in class B and is intended for
    use in living room and office. The CE and WEEE marks approve the conformity by the EU-guidelines:
    • EMC - guideline 2004/108/EC, Directive on Electromagnetic Compatibility
    • LVD - guideline 2006/95/EC, Directive on Low Voltage
    • ErP - guideline 2009/125/EC, Directive on ecoconception of Energy related Products
    • RoHS - guideline 2002/95/EC, Directive on Restriction of Hazardous Substances
    • WEEE - guideline 2002/96/EC, Directive on The Waste Electrical and Electronic Equipment
  • Other Compliance
    CB (IEC 60950-1:2005 (2nd Edition)

[1] depending on the test environment
[2] the threshold temperatures are subject to change by firmware update.
The KD20's threshold temperature refers to the "Current internal temperature" provided by the SMART monitoring system. This temperature may be much higher than the "operating/ambient temperature" that is also mentioned in the hard disk specification. The KD20 only supports hard disks with SMART monitoring system and temperature sensor which all available SATA hard disks should support.

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