NTI 4 Port High Density VGA USB KVM Switch


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The NTI  UNIMUX-USBV-4HD is a  4 Port High Density VGA USB KVM Switch.

The UNIMUX High Density VGA USB KVM Switch allows a user to control up to 32 USB computers with one USB keyboard, USB mouse and VGA monitor. Dedicated internal microprocessors emulate keyboard and mouse presence to each attached CPU 100% of the time so all computers boot error-free.


  • The High Density Switch saves rack space
    • 4-, 8- and 16-port switches are 1RU in height.
    • 32-port switch is 2RU in height.
    • Rackmount kit included. 
  • Features NTI's patented true autoboot USB switching - all attached computers can be booted simultaneously.
  • Compatible with USB computers (PC, SUN and MAC).
  • Crisp and clear 1920x1200 video resolution.
  • Equipped with OSD, RS232, and Ethernet.
  • High quality steel construction.
  • Cascade UNIMUX switches off a single master switch to control up to 1,024 computers as if from one switch.
  • Flash upgradeable.
  • Cabling runs are simplified with NTI's high density KVM switch cables.
  • Optional support for a USB 2.0 (low/full speed) device, in addition to keyboard and mouse, such as a touch screen monitor, interactive whiteboard, or CAC card reader.
  • Optional extender port for locating a remote user up to 300 feet via CAT5/5e/6 cable.
  • Only one user can be active at a time.
  • Locked out user must wait five seconds after last keystroke or mouse movement from active user.
  • For switches with the additional USB port option, the remote user does not have access to the extra USB device.

NTI UNIMUX-USBV-4HD Application Diagram

NTI UNIMUX-USBV-4HD Application Diagram

 NTI UNIMUX-USBV-4HD Specifications:

Width 16.7 in. (42.4 cm.)
Height 1.75 in. (4.45 cm.)
Depth 6.8 in. (17.3 cm.)
Video Connectors female 15HD-black
Video Resolution 1900x1200 (max.)
Video Support SVGA, XGA, VGA, most DVI monitors (when used with NTI DVIF-15HDM adapter)
Video Bandwidth 150 MHz
USER Keyboard/Mouse connectors female USB Type A
Mouse and Keyboard Compatibility most USB mice and keyboards
CPU connectors female 15HD-yellow (high density)
CPUs supported Windows USB, SUN USB, MAC USB
RS232 Connector female RJ45
Power required 110 or 220 VAC @ 50-60 Hz at less than 25 watts
Fuse Protection 2A, 240 VAC
Operating Temperature 32°F to 100°F (0°C to 38°C)
Storage Temperature -20°F to 140°F (-30°C to 60°C)
Operating & Storage Relative Humidity 17 to 90% non-condensing RH.
Regulatory approval CE, ROHS

NTI UNIMUX-USBV-4HD Control Methods:

Front Panel Interface

  • Touch a button and be connected to a computer or change modes of operation.
  • LEDs indicate currently selected port and mode of operation.

RS232 Control

  • Female RJ45 connector.
  • Baud rate 1200 to 115200.
  • Address up to 15 units, all of which can be daisy-chained and controlled by one serial port.


  • CS - connects output with specific input.
  • RO - reads what input is connected to output.
  • RU - reads size of switch.

Ethernet Control

  • Female RJ45 connector.
  • 10/100 BaseT Ethernet interface.
  • Supported protocol: Telnet.
  • Control can be done over Telnet.


  • Commands are similar to RS232 commands.
  • The telnet server listens on port 2005 (configurable).
    • Port 2005 is intended for a software control type session.


  • Scan, Broadcast, or Command Modes are available from the keyboard.
  • Use the keyboard to command the switch box to select ports or configure the SCAN delay.

On Screen Display (OSD)

  • Select computers by name with the On Screen Display (OSD).
  • Use keyboard or mouse to operate the switch from menus superimposed onto the monitor.
  • Shows names of computers on cascaded switches up to 1024 ports.
  • Names can be up to 12 characters long.
  • Power status of each computer is displayed.
  • View usage statistics - power-on cycles and hours of usage.
  • Helps screens assists users with the OSD.
  • Modify the size and position of the OSD.
  • OSD is built into the switch-no need to install additional hardware or software.
  • OS and software-independent.


  • Advanced security included.
  • Each user password can be up to 15 characters long, and each switch can store up to 63 users.
  • Administrator can enable or disable all security features and select which computers each user can access.
  • Once security is enabled, a user or administrator must login in order to access any of the computers connected to the switch.