At work, I use my laptop (a reasonably new Dell Latitude 5490 with Windows 10) connected to a Dell WD15 dock. With the laptop screen closed, this drives a single Samsung S23C650 monitor at 1920 x 1080 pixels, through the dock's Mini DisplayPort. The display is nice and clear enough to do my work.
I have now acquired another S23C650 monitor and I want to connect it through the dock to achieve an extended display of 2 x (1920 x 1080 pixels). The monitors have VGA, DVI-D and DisplayPort sockets - no HDMI.
I've tried an analogue VGA cable, but the display on the second screen is noticeably 'fuzzier'. So, I'm wondering how best to connect the 2 monitors through the dock:
I could get a VGA to DVI-D connector, but would that make it less 'fuzzy'? Or how about a VGA to DisplayPort adaptor, if such a thing was possible?
Several forums on the internet suggest a HDMI to DisplayPort adaptor might work, but others say there is no such thing and instead I would have to go to via a DVI adaptor anyway. So I could go HDMI to DVI-D to DisplayPort. But if I'm going to do that, why not stop at the HDMI to DVI-D. Would any of these solutions make the second screen less 'fuzzy'?
Amazon also sells a number of DisplayPort splitters, where 1 mini-DP is split into two through a little box. But these are quite expensive compared to various cables (typically £50+) and I am unsure whether they would allow the extend display I want.
Update: I acquired a HDMI to DVI-D cable. While the display was less fuzzy, it introduced strange artefacts to the text displayed on both monitors - every few millimetres the verticals of letters seemed to be double-width. In effect, the display on both monitors was worse than the slight fuzziness of one monitor using the analogue VGA connection. I got the impression that it would start to induce headaches after some hours, so I've gone back to using the VGA cable for the time being.