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Will this KVM switch support or work with a Display Port (DP) to DVI or VGA adapter between the switch and PC?
Thank you for your inquiry,

Absolutely, please see our Video Adapters & Converters page for DisplayPort to DVI adapters or DisplayPort to VGA converters.

Some users have reported issues with adapting HDMI to DP, but that is the only conversion issue with DP that I am aware of.
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Is it possible to switch between computers wiithout accessing the front panel of the switch?
Thank you for your inquiry,

The SC940D can only be switched using the physical buttons on the unit. "Secure KVM Switches" like the Avocent SC940D do not use a physical memory buffer, which prevents eavesdropping or key logging attempts (The keyboard and mouse USB buffers are automatically cleared after data transmission), but this prevents support for other switching methods like "Hot Key" functionality. See our Secure KVM Guide for more information on NIAP certified secure products.

SC940D Manual
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