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8. Basic Operation
8.1 Hot Plugging
The B024-DPU08 and B024-DPU16 KVMs support hot-plugging where components can be removed and added
back into the installation by unplugging their cables from the ports without needing to shut the unit down. In order for
hot plugging to work properly, the procedures described below must be followed:
8.1.1 Hot Plugging KVM Ports
In order for the OSD menus to correspond to KVM port changes, you must manually reconfigure the OSD to reflect
the new port information (see 9.6.3 F3: Set and 9.6.4 F4: Admin for details).
Note: If the computer's operating system does not support hot plugging, this function may not work properly.
8.1.2 Hot Plugging Console Ports
The keyboard, monitor and mouse can all be hot plugged. When hot plugging the mouse:
• You may unplug and re-plug the mouse (e.g. to reset the mouse), as long the same mouse is used.
• If plugging in a different mouse, all computers on the installation must be shut down for 10 seconds, then restarted
following the power up sequence described under Steps 6, 7, and 8 in section 7.3.2 Two-Stage Cascade
Installation.
Note: If after hot-plugging there is no response to keyboard and/or mouse input, perform a Keyboard and Mouse Reset by
simultaneously pressing the 1 and 2 front panel pushbuttons.
8.2 Port Selection
The KVMs provide four port-selection methods to access the computers in the installation: Manual, an OSD (on-
screen display) menu system, Hotkeys, and RS-232 commands.
• For OSD (on-screen display), see section 9. OSD Operation for more information.
• For Hotkeys operation, see section 10. Hotkey Operation for more information.
• For RS-232 commands, see section 12. RS-232 Operation for more information.
Manual Port Switching
Use the front panel pushbutton switches to manually switch to a port.
8.3 Port ID Numbering
Each port on the KVM installation is assigned a unique Port ID. You can directly access any computer on any level
of the installation by specifying the Port ID that the computer is connected to–either with the OSD (see 9. OSD
Operation), or with the Hotkey port selection method (see 10. Hotkey Operation).
• A computer attached to a primary unit has a two-digit Port ID (from 01–08 for the B024-DPU08, or 01–16 for the
B024-DPU16) that corresponds to the KVM port number it is connected to.
• A computer attached to a secondary unit has a four-digit Port ID.
The first two digits represent the KVM port number on the primary unit and the second two digits represent the
KVM port number on the secondary unit the computer is connected to. For example, a Port ID of 02 to 08 would
refer to a computer connected to KVM port 8 of a secondary unit that links back to KVM port 2 of the primary unit.
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