I forgot about adding the newly supported Sierra Wireless EM7455 to the umb(4) man page.
Bryan Index: share/man/man4/umb.4 =================================================================== RCS file: /cvs/src/share/man/man4/umb.4,v retrieving revision 1.5 diff -u -p -r1.5 umb.4 --- share/man/man4/umb.4 23 Nov 2016 20:23:54 -0000 1.5 +++ share/man/man4/umb.4 24 Nov 2016 00:17:39 -0000 @@ -46,6 +46,7 @@ The following devices should work: .Bl -tag -width Ds -offset indent -compact .It Ericsson N5321gw .It Medion Mobile S4222 (MediaTek OEM) +.It Sierra Wireless EM7455 .It Sierra Wireless EM8805 .It Sierra Wireless MC8305 .El