diff --git a/configs/nucleus2g/nsh/defconfig b/configs/nucleus2g/nsh/defconfig
index b051ab7ead..994017d182 100755
--- a/configs/nucleus2g/nsh/defconfig
+++ b/configs/nucleus2g/nsh/defconfig
@@ -578,6 +578,7 @@ CONFIG_LPC17_USBDEV_EPFAST_INTERRUPT=n
 CONFIG_LPC17_USBDEV_DMA=n
 CONFIG_LPC17_USBDEV_NDMADESCRIPTORS=0
 CONFIG_LPC17_USBDEV_DMAINTMASK=0
+
 #
 # USB Serial Device Configuration
 #
@@ -604,7 +605,7 @@ CONFIG_LPC17_USBDEV_DMAINTMASK=0
 CONFIG_USBSER=n
 CONFIG_USBSER_EPINTIN=1
 CONFIG_USBSER_EPBULKOUT=2
-CONFIG_USBSER_EPBULKIN=3
+CONFIG_USBSER_EPBULKIN=5
 CONFIG_USBSER_NWRREQS=4
 CONFIG_USBSER_NRDREQS=4
 CONFIG_USBSER_VENDORID=0x067b
diff --git a/configs/nucleus2g/ostest/defconfig b/configs/nucleus2g/ostest/defconfig
index 2d69e5a87c..6d75dfc87c 100755
--- a/configs/nucleus2g/ostest/defconfig
+++ b/configs/nucleus2g/ostest/defconfig
@@ -578,6 +578,7 @@ CONFIG_LPC17_USBDEV_EPFAST_INTERRUPT=n
 CONFIG_LPC17_USBDEV_DMA=n
 CONFIG_LPC17_USBDEV_NDMADESCRIPTORS=0
 CONFIG_LPC17_USBDEV_DMAINTMASK=0
+
 #
 # USB Serial Device Configuration
 #
@@ -604,7 +605,7 @@ CONFIG_LPC17_USBDEV_DMAINTMASK=0
 CONFIG_USBSER=n
 CONFIG_USBSER_EPINTIN=1
 CONFIG_USBSER_EPBULKOUT=2
-CONFIG_USBSER_EPBULKIN=3
+CONFIG_USBSER_EPBULKIN=5
 CONFIG_USBSER_NWRREQS=4
 CONFIG_USBSER_NRDREQS=4
 CONFIG_USBSER_VENDORID=0x067b
diff --git a/configs/nucleus2g/usbserial/defconfig b/configs/nucleus2g/usbserial/defconfig
index aba7874d54..506d719ba5 100755
--- a/configs/nucleus2g/usbserial/defconfig
+++ b/configs/nucleus2g/usbserial/defconfig
@@ -579,6 +579,7 @@ CONFIG_LPC17_USBDEV_EPFAST_INTERRUPT=n
 CONFIG_LPC17_USBDEV_DMA=n
 CONFIG_LPC17_USBDEV_NDMADESCRIPTORS=0
 CONFIG_LPC17_USBDEV_DMAINTMASK=0
+
 #
 # USB Serial Device Configuration
 #
@@ -605,7 +606,7 @@ CONFIG_LPC17_USBDEV_DMAINTMASK=0
 CONFIG_USBSER=y
 CONFIG_USBSER_EPINTIN=1
 CONFIG_USBSER_EPBULKOUT=2
-CONFIG_USBSER_EPBULKIN=3
+CONFIG_USBSER_EPBULKIN=5
 CONFIG_USBSER_NWRREQS=4
 CONFIG_USBSER_NRDREQS=4
 CONFIG_USBSER_VENDORID=0x067b
diff --git a/configs/nucleus2g/usbstorage/defconfig b/configs/nucleus2g/usbstorage/defconfig
index 7141c8e9ec..3f07556b28 100755
--- a/configs/nucleus2g/usbstorage/defconfig
+++ b/configs/nucleus2g/usbstorage/defconfig
@@ -579,6 +579,7 @@ CONFIG_LPC17_USBDEV_EPFAST_INTERRUPT=n
 CONFIG_LPC17_USBDEV_DMA=n
 CONFIG_LPC17_USBDEV_NDMADESCRIPTORS=0
 CONFIG_LPC17_USBDEV_DMAINTMASK=0
+
 #
 # USB Serial Device Configuration
 #
@@ -605,7 +606,7 @@ CONFIG_LPC17_USBDEV_DMAINTMASK=0
 CONFIG_USBSER=n
 CONFIG_USBSER_EPINTIN=1
 CONFIG_USBSER_EPBULKOUT=2
-CONFIG_USBSER_EPBULKIN=3
+CONFIG_USBSER_EPBULKIN=5
 CONFIG_USBSER_NWRREQS=4
 CONFIG_USBSER_NRDREQS=4
 CONFIG_USBSER_VENDORID=0x067b