hi guys am using lenovo laptop...as my keyboard is having some problems i installed an external keyboard..now the problem is i am using 1 USB port for speakers,1 for mouse and 1 for ext keyboard so i dont hv space for pendrives.. so i got a multi USB port.. in that one i could not install keyboard ie the system cant recognise it.but it works for mouse and speakers.. the system asks me to install the software from the manufacturer.. i hv Zebronics keyboard its model no. is ZEB-K05U CAN ANYBODY HELP ME