Default Setprop doesnt show "LGE AndroidNet USB Serial Port - any help

hi

i am trying to use cdma in lag nexus 5. i am rooted & flashed dev mode. now device is connected. device manager show it android android devices next to android adb interface.

now when i type adb shell it changes to $

then when type su it chages to #.

but whhen type setprop sys.usb.config diag,adb the command again shows the same command setprop sys.usb.config diag,adb reposted but nexus 5 doesnt show in device manager. i also dont see in com/port any new .

so how do i correct it. i need to connect come to change to spc & misc....