Maybe try Lantronix, but is is really expensive if only a single device access is desired.
And you are sdaying this does not wark well?
http://www.newegg.com/Product/Product.aspx?Item=N82E16812107956&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-VigLink-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=6146957&SID=inzituz7og00098f00053
And you are sdaying this does not wark well?
http://www.newegg.com/Product/Product.aspx?Item=N82E16812107956&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-VigLink-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=6146957&SID=inzituz7og00098f00053