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Chapter 7: Virtual Media Guide 93
interface device (HID). If the BIOS of the connected computer does not support this type of device,
the keyboard and mouse might not work until the operating system loads USB 2.0 device drivers.
Contact the computer manufacturer to determine whether a BIOS update exists that will provide
support for a USB 2.0-connected keyboard and mouse.
Booting a computer using virtual memory
In many cases the virtual media feature can boot an attached computer from a device attached to the
USB port on the KVM switch. Most computers with a USB port can use virtual media; however,
limitations in some USB media devices and the BIOS of some computers might prevent the
computer from booting from a USB device attached to the KVM switch.
To boot a computer from a virtual USB device, the target device must support booting from an
external composite USB device. This procedure also requires a CD of the operating system that
supports external USB 2.0 booting.
To determine if your computer can be booted from virtual media:
1. Connect a USB CD drive to the KVM switch. Insert the installation CD for your operating
system in the USB CD drive, then map the USB CD drive to the target device. Reboot the
target device to determine if it will boot from this attached CD drive. The BIOS might need to
be set to boot from an external USB device.
2. If the target device will not boot, connect the USB CD drive to a USB port on the target device
and reboot the target device. If the target device successfully boots from the CD drive, the
BIOS is not supporting booting from a composite USB 2.0 device. Check the support Web site
from the target device manufacturer to determine if a BIOS update is available that supports
booting from a composite USB 2.0 device. If so, update the BIOS and retry.
3. If the target device is not capable of booting from an external USB 2.0 device, try the
following methods to remotely boot this target device:
• Some BIOS versions provide an option to limit USB speeds. If this option is available to
you, change the USB port setting to “USB 1.1” or “Full Speed” mode and try booting
again.
• Insert a USB 1.1 card and try booting again.
• Insert a USB 1.1 Hub between the KVM USB VM server module and the target device
and try booting again.
• Contact the manufacturer of the target device for information on availability of a BIOS
revision that will support booting from a composite USB 2.0 device.
Virtual media restrictions
The KVM switches only support connection of USB 2.0 diskette drives, flash drives and CD drives.
In addition, the Network Access Software only supports mapping of USB 2.0 and USB 1.1 diskette
drives and flash drives connected to the client computer.