Is it posssible to connect two external monitors using a single HDMI port, perhaps using a special adapter/splitter?
The two displays are currently connected to a desktop using VGA and DVI.
You should be able to with an HDMI splitter.
You can get an HDMI Splitter and your computer will output to that splitter.
Your computer won't know the 2nd monitor exists. So as a result, you won't be able to make dual monitors out of it. Instead the 2 monitors will be a mirror display of each other.
Yes, using an HDMI splitter, but it will only have one source (aka one display, not extended display).