try to connect 6 usb>hdmi adapters

[mysticx]

hello everybody

sorry for my bad english ... i'm from switzerland

i bought 6 usb-> hdmi adaptors because i read i can use up to 6 adaptors for connect 6 additional monitors to my computer.

i installed the newest displaylink software from the homepage, connected all 6 adaptors to an active usb2-hub > all 6 adaptors are listed in the device manager.

ok, connected a first LED-monitor to the fist adapter -> no hdmi-signal detected is the message on the screen. then i tried to connect the monitor to another adapter -> the same. i tried another monitor and there is the same issue: no hdmi signal.

the monitor only receive a hdmi-signal when i disconnect the other 5 usb/hdmi adaptors -> after disconnect i can duplicate, mirror etc. the desktop. as soon as i connect a second monitor to a second adaptor with a hdmi cable (v1.3) both monitors goes blank -> no hdmi signal.

i use the adaptors from DeLock. this adaptor is delivered with a (old) displaylink driver so i installed the newest driver from the displaylink homepage.

my "normal" graphiccard is an intel onboard card (z68 chipset / graphic card is built in the sandy-bridge cpu).

and ideas why i can't use more than 1 adaptor?

EDIT: when i detach a hdmi cable from an adaptor the main monitor (connected to the intel graphic with dvi) flicker a bit so i'm sure windows knows that i detached the hdmi cable from the usb/hdmi adaptor.

best regards

mysticx