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ACS253A-CT
Appendix C: System Upgrade and Dual Access
Appendix C: System Upgrade and Dual Access
System Update/Onboard Programming
You might need to update the system firmware. Normally, this procedure is carried out in the factory. If you want to update the
firmware yourself, contact Black Box Technical Support at 724-746-5500 or info@blackbox.com. You will need a programming
cable and software to carry out the update. Follow the supplied instructions carefully.
Dual Access
NOTE: For PS/2 devices only.
Two jumpers located on the keyboard/mouse daughterboard in the remote unit enable you to:
• Change the Inactivity Timeout period between 2s (the default) and 15s. This is the minimum time of mouse and keyboard
inactivity required at one console before the Extender system allows the user at the other console to gain control.
The upper jumper switch (labeled Time) selects the inactivity timeout period. When closed, the setting is 2 seconds. When open,
the setting is 15 seconds.
• Select the method for gaining control. Two choices are available:
• Any keyboard activity or by pressing the left and right mouse buttons simultaneously (the default), or
• Keyboard activity only.
The lower jumper switch (labeled KeyB) selects the method of switching between local and remote consoles. When open, the
setting is for any keyboard action or by pressing the left and right mouse button simultaneously. When closed, the method is set
to keyboard activity only.
Table C-1. Alternative jumper settings for dual access control.
Inactivity timeout (seconds)
15
2
2
15
Keyboard/mouse action
K&M
K
K&M*
K
*(factory default)