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What are the storage and operational humidity specifications?
Thank you for your inquiry. According to Avocent, the environmental specs are:

TEMPERATURE
Operating: 0°C to 40°C
Non-operating: -20°C to 50°C

HUMIDITY:
Operating: 20 to 85% relative humidity (non-condensing) across the operating temperature range.
Non-operating: 5 to 95% relative humidity, 38.7°C maximum wet bulb temperature with no cosmetic damage. Unit shall be fully functional after returning to operating temperature and humidity range.
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I connected two monitors to the console ports on the KVM but only the monitor in the first console port will display; any ideas.
Unfortunately, due to the varied nature of user environments, detailed product support is beyond the scope of this simple product FAQ.

That being said, you can try a couple of things. Confirm all cables are attached securely. Ensure that both monitors function individually. Make sure the target computer is capable of, and configured for, dual monitor display (requires a dual monitor capable video card or two cards).

A great source for additional support would be Avocent\'s Technical Support Community found here:
http://community.emerson.com/networkpower/support/avocent/
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Do you have the Avocent SwitchView SC540 Secure KVM Switch instock and can you ship it overnight?
Thank you for your inquiry. Please call your KVM Switches Online representative at 1-877-586-6654 for all stocking questions.
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This product is not advertised as dual monitors but it does have a dual-link DVI. Please confirm, will the Avocent SC540 work with dual monitors?
Thank you for your inquiry. You are correct; the SC540 does have support for dual monitor setups.

It should be noted, however, that the dual-link reference is to the amount of bandwidth provided by each connection (dual-link will provide twice the data bandwidth for each DVI connection to support higher resolutions than can be achieved with a single link DVI connection). It is the dual-head aspect that allows this KVM to support dual monitor setups.

Thank you for mentioning this, we will be sure to clarify that this switch will support dual monitor setups.
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Does the dual monitors option allow to "monitor" one computer screen and work (keyboard/mouse/screen) from another?
Thank you for your inquiry. The dual monitor feature of this secure KVM allows a single target to access both monitors at once, for an extended desktop environment. Unfortunately, it will not display information from different targets on separate displays.

A secure multi-viewer KVM switch, like this one from SmartAVI https://www.kvm-switches-online.com/k424f-sh.html, may provide the functionality you are looking for.
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