that's the point…
) i switched to OpenPLi 7.2
2) I installed 2 drivers *.ipk, the one above and the one i found in this old thread both from Master G WiFi adaptor rtl8192eu drivers for dm900
3) command usb-devices does not work on OpenPLI and command lsusb does not give any indication
4) I plugged the stick and it worked… should be one of the 2 above drivers