Second Monitor Not allowing me to change resolution

[Amanda2044]

I am not sure if this  is in the correct place.

However, I have a Dell OptiPlex 780 and recently purchased a USB 3.0 VGA multi-display video convertor to hook up a second monitor seeing as my computer does not have another DVI or VGA hookup. Well, it works but it is stuck at 800X600 resolution only for the second monitor. I've made sure all the drivers were updated as I read on other forums.
It will not allow me to change the resolution to where the first monitor is  1440X900. They are the same monitors (Dell E198WFP). Please help. I MUST have two monitors for work and cannot figure this out.

[patio]

What brand adapter is this ? ?

[Amanda2044]

http://www.amazon.com/gp/product/B00LE0FEV0/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1  This is the link to the adapter I purchased (or was directed to purchase).

[patio]

Did you install the software that runs it and try there ? ?

[Amanda2044]

Yes. It came with a disc. I installed that. The screen is displaying images, just not at the correct resolution. And in the display settings it will not allow me to change it. It is grayed out.

[patio]

If it's greyed out then it likely doesn't support higher resolutions on the 2nd connection...check the Help file...

[Amanda2044]

Specifications: 1. USB 3.0 multi-display super speed. 2. Compatible with USB2.0(Under 800*600 Resolution) 3. Allows you to convert the USB3.0 output port to an analog VGA input. 4. Supports full-size high definition resolutions of 720p and 1080p. 5. Resolution up to: UXGA: 1600X1200 / WSXGA+:1680X1050, 1920X1080, 2048X1152. 6. Does not support Audio transfer. 7. Available USB3.0/2.0 hi-speed port. 8. Support Win7&Win8 9. CPU: Intel/AMD single core 1.5GHZ or higher processor. 10. RAM: 512MB memory or higher. 11. Application: Office workstation, wall street, editing workstation, graphics workstation, entertainment. Package includes: 1 x USB3.0-VGA Display Adapter 1 x Driver/Manual CD Our products have been well tested, examined and packaged before sending off, but we cannot 100% guarantee the items remain undamaged when delivered to you. Any problem please feel free to contact us first so that we can supply the best service for you. Kind Reminder:If the CD driver is broken during the shipping,please contact us to ask for the link to download. 


I do not know if this helps?

[patio]

Compatible with USB2.0(Under 800*600 Resolution

[camerongray]

Compatible with USB2.0(Under 800*600 Resolution)

This will be the problem then, the adapter needs a USB 3.0 port to go above that resolution which your computer doesn't have, I suggest you return the adapter for a better one.

Also check the back of your PC to see if it has a "DisplayPort", adapters for this to VGA are a lot cheaper and more reliable than the USB ones and do not need any drivers.

Displayport is the one on the left in this image:

[Geek-9pm]

Dell OptiPlex 780 have three PCI half high slots. He could get a new card that supports two monitors.

[patio]

It would appear they chose the budget route...

[Amanda2044]

I honestly don't mind choosing the more expensive route if it works. Because I am a bit computer illiterate I chose the adapter. If someone can point me in the right direction for a better way then I would be MORE than happy to pay a little more (so far I've spent $80 on two adapters, the driver didnt' work on the first one).

I also do not have a display port on the back of this computer.

http://www.sourceonedeals.com/images/eBay/Items/IMG_1994.jpg
This is what my computer looks like from the back.

[camerongray]

You do have a DisplayPort there, it's the bottom right one in that picture.  For that you need an adapter like this:

[Amanda2044]

See, computer illiterate.
Can you tell me if this is the same thing you included a picture of Camerongray?
 http://www.amazon.com/Cable-Matters-Plated-DisplayPort-Adapter/dp/B005H3Q56I/ref=sr_1_2?s=electronics&ie=UTF8&qid=1410796164&sr=1-2&keywords=vga+displayport
http://www.amazon.com/Cable-Matters-Gold-Plated-DisplayPort/dp/B005RISB3S/ref=sr_1_1?s=electronics&ie=UTF8&qid=1410796164&sr=1-1&keywords=vga+displayport

[camerongray]

Yep, those are the same thing.