21
8 and 16-PORT SECURE KVM USER MANUAL
Section 4 - Operation
o
When connecting a USB device that is not qualified
or rejected for security reasons to the product's DPP
port, the DPP LED will flash green and USB device will
be inoperable. In such case the USB device must be
replaced with a qualified device.
o
When connecting a USB device to the product's DPP
port that is undetectable for any reason (e.g. failed
device, non-standard device etc.), the DPP LED will
not illuminate at all and USB device will be
inoperable. In such case the USB device must be
replaced with a qualified device.
Since channel #1 is the default active channel after power up
and in case only some of the channels operate with a USB
device, it is recommended to make sure computer #1 is
connected to USB device.
Once the user switches channels, for example to channel #3,
DPP functionality will move to computer #3 and be indicated
by channel #3 DPP LED turning steady green.
In case user switches to a channel that is not connected to a
USB device, the previous USB connection will be terminated
and no new connection will be established.
In case "Freeze DPP" slider was moved to activate DPP
function for computer #1, for example, switching to a
different channel would keep DPP function locked to channel
#1. To release "Freeze DPP" function from channel #1, the
user will need to move the "Freeze DPP" slider again to its
original position. The release will be indicated by the channel
#1 DPP LED being turned off.
In case Restore-to-Default was performed while "Freeze
DPP" slider was activated on a specific channel, after boot up
this function will be locked to computer #1.
Using "DPP Freeze" feature
Move the "DPP Freeze" slider to lock DPP function to a specific
channel. The DPP status LED will indicate that this option has been
activated and to which channel the DPP function is locked to at the
moment. This means that switching channels would not affect the
processes performed by the USB device connected to that channel.
Keyboard Status Indication
In order to enhance usability, product provides keyboard status
indications via dedicated LEDs located on product front panel. To
maintain the required unidirectional connectivity between keyboard
and product, these indication are not given on the keyboard itself as
done with non-secure products
The keyboard status indications are given via 3 LEDs on the front
panel of the product:
• CL – CAPS Lock
• SL – SCROLL Lock
• NL – NUM Lock
The indications behave the same as the LEDs on the keyboard as if it
was connected directly to computer.
Switching from channel to channel may change the status of the
LEDs based on the current settings on the computer connected to
the active channel.
