NTI Transparent USB Extender with DVI Video, Audio and RS232 via Fiber


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The NTI ST-FOUSB2DARS-LC XTENDEX transparent USB Extender with DVI Video, Audio and RS232 via Fiber extends four USB devices, RS232, speakers and a single link digital DVI display up to 6,500 feet via two duplex singlemode LC fiber optic cables.

The ST-FOUSB2DARS-LC DVI USB KVM Extender consists of a local unit that connects to a computer and provides local keyboard, monitor and mouse connections, and a remote unit that connects to four USB devices, a DVI display, and analog stereo audio speakers.

NTI XTENDEX ST-FOUSB2DARS-LC Features and Benefits:

  • Supports fully transparent USB connections - supports all USB computers (PC, SUN and MAC) and their associated peripherals.
  • Signal transmission via four-strand singlemode or multimode LC fiber optic cable.
    • Using singlemode cable, extend to 6,500 feet (1,981 meters).
    • Using multimode cable, extend to 1,650 feet (503 meters).
  • Supports HDTV resolutions to 1080p and computer resolutions to 1920x1200 (WUXGA).
  • Two modes of USB operation.
    • Local mode - computer sees USB devices connected to the transmitter.
    • Remote mode - computer sees USB devices connected to the receiver.
  • Cables can be installed in conduit prior to extender installation.
  • Extend USB devices such as keyboards, mice, printers, game controllers, flash drives, touch screen monitors, whiteboards, etc.
  • Compliant with USB 2.0 (low/full speed) standards.
  • Low RFI/EMI for sensitive applications.
  • Optical link is not susceptible to eavesdropping or electromagnetic interference
  • Includes rack mounting kit.

NTI XTENDEX Transparent USB Extender with Audio, DVI Video, and RS232 Diagram
(ST-FOUSB2DARS-LC depicted here)


  • 1 ST-FOUSB2DARS-LC Local Unit
  • 1 ST-FOUSB2DARS-LC Remote Unit
  • 2 12V/3A Power Adapter Units
  • 1 VEXT-3 15HD Male to 15HD Female 3 ft. Cable
  • 1 CD containing User Manual


Width12.6 in. (3.2 cm)
Height1.75 in. (0.45 cm)
Depth5.1 in. (1.3 cm)
Operating Temperature32 to 122°F (0 to 50°C)
Storage Temperature-4 - 185°F (-10 to 85°C)
Operating Humidity5 to 85% non-condensing RH
Power Consumption100V-240VAC @ 50/60Hz-5VDC via adapter
Local Unit 
Host Connection1x USB Type B; 1 x DVI-I single link;
1 x 3.5mm stereo; 1 x DB9 female
Video ResolutionMaximum 1080p HDTV, 1920 x 1200 PC
Local Access1 x DVI-I; 2 x USB Type A
Remote Unit  
Connections1 x DVI-I; 4 x USB Type A; 1 x 3.5mm stereo;
1 x DB9
ResolutionMaximum 1080p HDTV, 1920 x 1200 PC
Video SignalDVI single link
USBFull-speed (12 Mbps) or Low-speed (1.5 Mbps)
Audio SignalDVI single link
Audio Sampling Rate48KHz
Input Impedance>25Kohm
Output Impedance100ohm
Signal-to-Noise Ratio (SNR)>79 dBA
Stereo crosstalk-67dB @ 1KHz
ApprovalsCE,. FCC, RoHS
Question: who is the manufacturer?
Answer: Thank you for your inquiry. This product is manufactured by NTI (Network Technologies, Inc.).