Solved Dell Optiplex 755 USFF AIO monitor back connections...

Intel / D945gnt
March 4, 2019 at 09:57:13
Specs: Windows 7, Core Duo 2,58 GHZ /2GB
Hi,
While my signing to Dell Community is pending I thought to ask here.
As said, I need something to explain the connectors on the the monitor. That is:
2 x USB A connectors on the left side of the monitor and:

2 x USB A connectors,
1 x USB B connector,
1 x VGA connector
1 x DVI connector all on the lower back of the monitor

Here are the connectors on the main unit:
1 x DVI connector on the left side
5 x USB A connectors on the left,
2 x USB A connectors on the right,
1 x RJ45 connector on the left,
1 x serial 9 pin connector on the left
1 x LPT connector on the left
1 x Mic & Spk connector on the left

Since the only connection right now between unit & monitor is the DVI cable, my question is: Do all these connectors on the monitor back (need to) connect somehow to the unit (in order to be functional..) or the monitor is "generic" type that can not connect to this unit (USFF).
Just curious for the power supply... If connect a USB device on the left of the monitor it gets power but no data...(meaning it gets 5V internally from the monitor??)

Any help to this puzzle will be highly appreciated.
Tnx


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#1
March 4, 2019 at 10:35:15
Typically one would connect one of the USB A ports on the computer to the one on the monitor/display; and presuming the monitor has a built in usb hub the other USB B ports wil then be active.

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#2
March 4, 2019 at 14:45:21
✔ Best Answer
It's really not an AIO (all-in-one) unit as we know them today. What you have is a monitor with a funky base & an USFF (ultra small form factor) tower that sits behind the monitor screen on that "funky base".
Like so: http://www.3b-it.co.uk/images/rackm...

The ports listed for the "main unit" are typical for the rear of most older Dell towers. To get the USB A ports to work on the monitor, you need to connect a cable from one of the USB A ports on the tower to the USB B port on the monitor. https://images.monoprice.com/produc...

Here's the specs for all the versions of the Optiplex 755: https://www.dell.com/downloads/glob...


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