The older Belkin F1DN104D and F1DN104U legacy KVMs did not support Full-Time Active EDID / DDM / DDC. As such, when switching to another computer, all of the USB and monitor information has to be reestablished with the KVM, which is why you experience the usual delay.
Yes, these KVMs were designed prior to Windows® 7.
Yes, but the Belkin F1DN104D tends to see longer delay with video switching. This is likely due to the more complex Digital Visual Interface (DVI) technology, compared to VGA (analog).
They do have the same issue, regardless of the OS. Most users using the Belkin F1DN104D and F1DN104U have become accustomed to dealing with this limitation, as it was the only type of solution from 2007 to 2012. These models also allow customers to use specialty mouse and keyboards (mainly for disabled users, as per Section 508 Compliance / VPAT as well as to use a USB Hub in certain situations to support CAC on these older models). In short, there are still many customers who need these models, as the newer ones prevent all of this with Restricted USB.
Yes. Any OS after Windows® 7 constantly requests for EDID, DDC, and DDM from the peripheral devices. As such, when switching from computer to computer, all USB and Video data has to be reestablished through the KVMs. The computer industry implemented this, likely, since keyboards and mice were becoming more sophisticated, and video / graphics were becoming more of a requirement for gaming and other graphic-intensive programs. The need for the computer / OS to always have access to the monitor and peripheral information became paramount, so the OS is designed to make sure it constantly has access to it.
This issue is not unique to Belkin nor to Belkin Secure KVMs. The entire KVM industry ran into this issue when Windows® 7 was released. Our Small-Office / Home-Office (SOHO) and Flip KVMs also had to be modified to support Full-Time Active EDID as customers were complaining about the monitor information taking too long to come back, resulting in delays and open windows on the secondary monitor(s) cascading back to the primary.
No. The Advanced Secure KVMs retain the EDID information individually on each channel, to prevent any type of video delay. This feature is not available on the legacy KVM, short of doing software and hardware changes that, at this point in the product lifecycle, just don’t make sense to implement. If the customer is fine with Restricted USB (i.e. they can’t use specialty keyboards/mice) then models like B / C and E / F are recommended, as 9015 cables can be used to get analog support when needed, and they would no longer see any video of USB switching delays.
