2 HMX Extender System Installer/User Guide
Support for keyboards, mice and mass storage devices
USB and PS/2 keyboards (up to 109 keys) and mice are fully supported by the HMX system. The
remote workstation default keyboard and mouse drivers are fully supported, enabling the HMX
system to support two, three and five-button mice with scroll and tilt-wheel capability. Composite
mouse and keyboard devices are also supported, along with mass storage devices and other types of
USB devices. CD and DVD/ROM drives, thumb drives and other non-isochronous USB devices
such as printers, touch screens, smart card readers, and pen tablets are supported as well.
NOTE: The HMX system does not support isochronous USB devices such as speakers or web cams.
Support for mass storage devices is also provided on the HMX user stations automatically. Support
for other USB devices is provided on the HMX 1070 and HMX 2050 user stations automatically,
but can be overridden by the user. In an HMX user station, the first device that is not keyboard,
mouse or mass storage is assigned to the virtual USB channel (vUSB channel) and passed to the
remote computer. In the event you want to use the vUSB channel for a keyboard or mouse, the on-
screen display (OSD) allows the default vUSB device to be disabled and a keyboard or mouse to be
assigned to that vUSB channel.
NOTE: The vUSB channel will only be used for devices other than the standard keyboard, mouse and mass
storage devices.
A firmware upgrade is required to utilize mass storage instead of another vUSB device on the
HMX 1050 user station. Default support for other USB devices in the HMX 1050 user stations is
provided in place of support for a mass storage device. If you need to use mass storage in place of
another vUSB device, go to www.avocent.com and download the HMX 1050 user station firmware
upgrade.
NOTE: A hub cannot be used to expand the number of USB ports available.
The HMIQDI transmitter provides two USB interfaces:
• One port is low speed while the second video port is set to full speed. These ports are used for
all keyboard and mouse peripheral devices interfacing with the target workstation, along with
providing power for the HMIQDI transmitter.
• The other is a high-speed port that is used for virtual media (mass storage devices) peripheral
devices or other USB devices interfacing with the target workstation, along with providing
power for the HMIQDI transmitter.
NOTE: The HMIQDHDD and HMIQSHDI transmitters provide a single USB interface, and use an integrated hub
within the transmitter.
Video
Video of 24-bit color depth up to a resolution of 1280 x 1024 at 60 Hz is supported by the HMX
1050 user station and HMIQDI transmitter. Both CRT and flat-panel LCD monitors are supported,
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