diff --git a/share/man/man4/u3g.4 b/share/man/man4/u3g.4
index 6b0bd2a2c1f..53094929074 100644
--- a/share/man/man4/u3g.4
+++ b/share/man/man4/u3g.4
@@ -72,6 +72,8 @@ Qualcomm Inc. CDMA MSM
 .It
 Qualcomm Inc. GOBI 1000, 2000 and 3000 devices with MDM1000 or MDM2000 chipsets
 .It
+QUECTEL EC25, EM05, EM12-G.
+.It
 Huawei B190, E180v, E220 ('<Huawei Mobile>')
 .It
 Novatel U740, MC950D, X950D, etc.
diff --git a/sys/dev/usb/serial/u3g.c b/sys/dev/usb/serial/u3g.c
index 664ea6c54d9..1aec5b29d51 100644
--- a/sys/dev/usb/serial/u3g.c
+++ b/sys/dev/usb/serial/u3g.c
@@ -500,6 +500,7 @@ static const STRUCT_USB_HOST_ID u3g_devs[] = {
 	U3G_DEV(QUANTA, Q111, 0),
 	U3G_DEV(QUECTEL, EC25, 0),
 	U3G_DEV(QUECTEL, EM05, 0),
+	U3G_DEV(QUECTEL, EM12_G, 0),
 	U3G_DEV(SIERRA, AC402, 0),
 	U3G_DEV(SIERRA, AC595U, 0),
 	U3G_DEV(SIERRA, AC313U, 0),
diff --git a/sys/dev/usb/usbdevs b/sys/dev/usb/usbdevs
index 2153720b7b5..ab35964f504 100644
--- a/sys/dev/usb/usbdevs
+++ b/sys/dev/usb/usbdevs
@@ -3954,6 +3954,7 @@ product QUANTA RW6815R		0xf003	HP iPAQ rw6815 RNDIS
 /* Quectel products */
 product QUECTEL EC25		0x0125	LTE modem
 product QUECTEL EM05		0x0127	LTE modem
+product QUECTEL EM12_G          0x0512  LTE modem
 
 /* Quickshot products */
 product QUICKSHOT STRIKEPAD	0x6238	USB StrikePad