U2410 and Playstation DisplayPort issues

I have a monitor dell u2410 and I have a problem with the display port connection,I use normally a hdmi cable to connect to the Playstation but I bought a display port to hdmi adapter in ebay

http://www.ebay.es/itm/161240837014?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

but when I connect no display image received.I think that the display port conector is IN like the other connectors,The think is when I input it no cable signal is detected and with the same cable I plug it in the hdmi conector and works fine. I try in the Ps3 and Wii U with same results. Is the adapter wrong? Any solutions?

Thanks