Dell S2716DG monitor & usb ports

[Necessity]

Hi guys I've got this monitor yesterday i used both the cables provided by Dell

meaning the Displayport cable for the GPU-Monitor link

and the usb cable to enable the 4 usb ports present

Installed the cd present in the software but those usb ports just refuse to work!

and in my device manager list there 2 "unknown device" with the mark question  (which weren't there before I installed the monitor.

I've tried to update the software like Dell suggest but nothing...

Nothing does seems to work.

AM I doing something wrong? do I need another usb cable?

What might be the solution?

my setup is the following

Win 7 ultimate 64bit

I5-6600k

Asus Maximus VIII ranger

4x4gb ddr4 G. Skill 2666mhz

Gtx 1080 Zotac Amp! Extreme edition

[fireberd]

Uninstall the two unknown devices in the Device Manager.  Disconnect the USB cable from the PC.  Restart the PC and after Windows starts connect the cable and see if detects it properly.   Make sure you are using a USB 2.0 port, not a USB 3.0 port.

I have an ASUS ROG Maximus VIII Hero, i7 6700K, 16 GB Corsair RAM

[Necessity]

tried and nothing but now the unknown device in the device manager is just one

[Necessity]

the hardware id is this one : USB\VID_0451&PID_8142&REV_0100

[fireberd]

My mistake, the monitor has USB 3.0 port.  So, make sure you are using a USB 3.0 port on the PC.

However, there can be issues with USB 3.0 and Windows 7.  

If your motherboard has Intel USB 3.0 controller, download the Intel 3.0 drivers for Win 7 and see if that helps.

downloadcenter.intel.com/.../USB-3-0-Driver-Intel-USB-3-0-eXtensible-Host-Controller-Driver-for-Inte...