Monitor physical arrangement problem

[Devon]

Hello,

I had 4 monitors and I am adding an ELO 0700L, which uses you DisplayLink monitor, as a fifth monitor. Previously, my monitors were arranged like this:

****2

3***4

****1

Monitor 4 is my primary monitor with its upper left corner at (0, 0). The upper left corner of monitor 3 is (-800, 0). After I rebooted, the monitor's physical arrangement came up in the saved arrangement. Since I have added the ELO 0700L, that is no longer true. I can go into the display properties and change physical arrangement to what is required, but when I reboot the physical arrangement incorrectly comes back to this:

2

5 (Previously 4)**4 (Previously 3)

1*****************3 (ELO 0700L)

The DisplayLink monitor comes in as 3 and moves the other monitors up one, so Monitor 5 is now my primary monitor. Its upper left corner is still (0, 0). Monitor 4 (previously 3) is the problem. Now, its upper left corner is (1920, 0).