Unfortunately, I can't look at your links.  Otherwise, Amazon wants me to change countries and it's difficult to change back. If all 3 monitors have DP: If you go this route, be sure to get an LP (low profile) version.  Some may also come with both the large and small brackets. If a monitor only has HDMI, then you may need a DP to HDMI adapter cable.
Hi - got a 3681 with onboard HDMI and VGA ports, running two 22" monitors, and a third Asus MB168B portable USB monitor that runs off USB.  It's used for a home business, no gaming requirement... I'd now like to run a third 'normal' monitor rather than the portable one.  I've tried a USB to HDMI adapter ([URL] however the performance is poor (very laggy, takes a while to 'wake up' after the screens timeout, the mouse pointer gets disrupted) so looking for a better solution. (When I ordered it the Amazon reviews were decent and it had 4 stars - all recent reviews are 1 star so something dodgy going on there...) From reading around, if I put in a new graphics card the built-in card (Intel 620) would be disabled - would this also disable the onboard HDMI and VGA ports?  If so then any card I add in would need 3 ports, which looks like a bit of a struggle on a low profile card. As one of my monitors is a Dell P2223HC with DisplayPort in and out I think my only option is a graphics card with a DisplayPort and one other port - maybe something like this MSI GT1030 ([URL] however the size of the heat sink on that makes me wonder if it will physically fit inside the SFF case. Has anyone got a SFF 3681 running three external screens, or can offer any more help? Don't really want to have to replace the PC to get a 3rd screen running. Thanks!
Vostro 3681 running 3 monitors