I wanted to know if this set-up ever worked on the computer if yes what the cable connection that were used.
Also try to check with one monitor at a time and see if the computer able to detected it.
As you say that you are using E5500 port generally the DVI connections on an E Port are DVI-D will not function with a DVI to VGA adapter (These adapters require a DVI-I, digital connection interlaced with Analog connection.
If you have any questions further can reply back to us.
Thanks and regards, Madhur B #iworkfordell To know more about Dell Product Support, Drivers & Downloads, Order & Dispatch status -> choose your region US Customers; UK Customers; India Customers. For Dell support videos click Here.