diff --git a/src/portable/nxp/lpc17_40/dcd_lpc17_40.c b/src/portable/nxp/lpc17_40/dcd_lpc17_40.c
index b4a11f49c..dfdae1450 100644
--- a/src/portable/nxp/lpc17_40/dcd_lpc17_40.c
+++ b/src/portable/nxp/lpc17_40/dcd_lpc17_40.c
@@ -219,11 +219,13 @@ void dcd_remote_wakeup(uint8_t rhport)
 
 void dcd_connect(uint8_t rhport)
 {
+  (void) rhport;
   sie_write(SIE_CMDCODE_DEVICE_STATUS, 1, SIE_DEV_STATUS_CONNECT_STATUS_MASK);
 }
 
 void dcd_disconnect(uint8_t rhport)
 {
+  (void) rhport;
   sie_write(SIE_CMDCODE_DEVICE_STATUS, 1, 0);
 }
 
diff --git a/src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c b/src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c
index 9af8e6019..980fa118f 100644
--- a/src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c
+++ b/src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c
@@ -95,7 +95,7 @@ enum {
   CMDSTAT_DEVICE_ADDR_MASK    = TU_BIT(7 )-1,
   CMDSTAT_DEVICE_ENABLE_MASK  = TU_BIT(7 ),
   CMDSTAT_SETUP_RECEIVED_MASK = TU_BIT(8 ),
-  CMDSTAT_DEVICE_CONNECT_MASK = TU_BIT(16), ///< reflect the softconnect only, does not reflect the actual attached state
+  CMDSTAT_DEVICE_CONNECT_MASK = TU_BIT(16), ///< reflect the soft-connect only, does not reflect the actual attached state
   CMDSTAT_DEVICE_SUSPEND_MASK = TU_BIT(17),
   CMDSTAT_CONNECT_CHANGE_MASK = TU_BIT(24),
   CMDSTAT_SUSPEND_CHANGE_MASK = TU_BIT(25),
@@ -209,6 +209,18 @@ void dcd_remote_wakeup(uint8_t rhport)
   (void) rhport;
 }
 
+void dcd_connect(uint8_t rhport)
+{
+  (void) rhport;
+  DCD_REGS->DEVCMDSTAT |= CMDSTAT_DEVICE_CONNECT_MASK;
+}
+
+void dcd_disconnect(uint8_t rhport)
+{
+  (void) rhport;
+  DCD_REGS->DEVCMDSTAT &= ~CMDSTAT_DEVICE_CONNECT_MASK;
+}
+
 //--------------------------------------------------------------------+
 // DCD Endpoint Port
 //--------------------------------------------------------------------+
diff --git a/src/portable/template/dcd_template.c b/src/portable/template/dcd_template.c
index d29c98e55..ba1383f31 100644
--- a/src/portable/template/dcd_template.c
+++ b/src/portable/template/dcd_template.c
@@ -91,6 +91,18 @@ void dcd_remote_wakeup (uint8_t rhport)
   (void) rhport;
 }
 
+// Connect by enabling internal pull-up resistor on D+/D-
+void dcd_connect(uint8_t rhport)
+{
+  (void) rhport;
+}
+
+// Disconnect by disabling internal pull-up resistor on D+/D-
+void dcd_disconnect(uint8_t rhport)
+{
+  (void) rhport;
+}
+
 //--------------------------------------------------------------------+
 // Endpoint API
 //--------------------------------------------------------------------+