diff --git a/examples/DualRole/Simple/device_info/device_info.ino b/examples/DualRole/Simple/device_info/device_info.ino
index 909aa567..5d10cc1a 100644
--- a/examples/DualRole/Simple/device_info/device_info.ino
+++ b/examples/DualRole/Simple/device_info/device_info.ino
@@ -62,10 +62,8 @@
 #include "Adafruit_TinyUSB.h"
 
 #if defined(CFG_TUH_MAX3421) && CFG_TUH_MAX3421
-
 #include "SPI.h"
-
-// USB Host object using MAX3421E: SPI, CS, INT
+// USB Host using MAX3421E: SPI, CS, INT
 Adafruit_USBH_Host USBHost(&SPI, 10, 9);
 #else
 Adafruit_USBH_Host USBHost;
@@ -93,7 +91,7 @@ void setup() {
   // init host stack on controller (rhport) 1
   USBHost.begin(1);
 
-  while ( !Serial ) delay(10);   // wait for native usb
+//  while ( !Serial ) delay(10);   // wait for native usb
   Serial.println("TinyUSB Dual Device Info Example");
 }
 
diff --git a/src/arduino/Adafruit_USBH_Host.cpp b/src/arduino/Adafruit_USBH_Host.cpp
index 2e304925..fc600eb5 100644
--- a/src/arduino/Adafruit_USBH_Host.cpp
+++ b/src/arduino/Adafruit_USBH_Host.cpp
@@ -199,6 +199,14 @@ void tuh_max3421_int_api(uint8_t rhport, bool enabled) {
     NVIC_DisableIRQ(EIC_IRQn);
   }
 #endif
+
+#elif defined(ARDUINO_NRF52_ADAFRUIT)
+  if (enabled) {
+    NVIC_EnableIRQ(GPIOTE_IRQn);
+  } else {
+    NVIC_DisableIRQ(GPIOTE_IRQn);
+  }
+
 #endif
 }
 }
diff --git a/src/arduino/ports/nrf/Adafruit_TinyUSB_nrf.cpp b/src/arduino/ports/nrf/Adafruit_TinyUSB_nrf.cpp
index 46069e5e..cd56ff82 100644
--- a/src/arduino/ports/nrf/Adafruit_TinyUSB_nrf.cpp
+++ b/src/arduino/ports/nrf/Adafruit_TinyUSB_nrf.cpp
@@ -68,7 +68,8 @@ static void usb_device_task(void *param) {
   // 2 is highest for application
   NVIC_SetPriority(USBD_IRQn, 2);
 
-  tusb_init();
+  // init device on rhport0
+  tud_init(0);
 
   usb_hardware_init();
 
diff --git a/src/arduino/ports/nrf/tusb_config_nrf.h b/src/arduino/ports/nrf/tusb_config_nrf.h
index 7b9e5711..eef1c31a 100644
--- a/src/arduino/ports/nrf/tusb_config_nrf.h
+++ b/src/arduino/ports/nrf/tusb_config_nrf.h
@@ -34,12 +34,6 @@ extern "C" {
 //--------------------------------------------------------------------
 #define CFG_TUSB_MCU OPT_MCU_NRF5X
 
-#ifdef USE_TINYUSB
-#define CFG_TUSB_RHPORT0_MODE OPT_MODE_DEVICE
-#else
-#define CFG_TUSB_RHPORT0_MODE OPT_MODE_NONE
-#endif
-
 #define CFG_TUSB_OS OPT_OS_FREERTOS
 #define CFG_TUSB_MEM_SECTION
 #define CFG_TUSB_MEM_ALIGN __attribute__((aligned(4)))
@@ -48,6 +42,19 @@ extern "C" {
 #define CFG_TUSB_DEBUG 0
 #endif
 
+#ifdef USE_TINYUSB
+// Enable device stack
+#define CFG_TUD_ENABLED 1
+
+// Enable host stack with MAX3421E (host shield)
+#define CFG_TUH_ENABLED 1
+#define CFG_TUH_MAX3421 1
+
+#else
+#define CFG_TUD_ENABLED 0
+#define CFG_TUH_ENABLED 0
+#endif
+
 //--------------------------------------------------------------------
 // DEVICE CONFIGURATION
 //--------------------------------------------------------------------
@@ -79,10 +86,54 @@ extern "C" {
 #ifndef CFG_TUD_VENDOR_RX_BUFSIZE
 #define CFG_TUD_VENDOR_RX_BUFSIZE 64
 #endif
+
 #ifndef CFG_TUD_VENDOR_TX_BUFSIZE
 #define CFG_TUD_VENDOR_TX_BUFSIZE 64
 #endif
 
+//--------------------------------------------------------------------
+// Host Configuration
+//--------------------------------------------------------------------
+
+// Size of buffer to hold descriptors and other data used for enumeration
+#define CFG_TUH_ENUMERATION_BUFSIZE 256
+
+// Number of hub devices
+#define CFG_TUH_HUB 1
+
+// max device support (excluding hub device): 1 hub typically has 4 ports
+#define CFG_TUH_DEVICE_MAX (3 * CFG_TUH_HUB + 1)
+
+// Enable tuh_edpt_xfer() API
+// #define CFG_TUH_API_EDPT_XFER       1
+
+// Number of mass storage
+#define CFG_TUH_MSC 1
+
+// Number of HIDs
+// typical keyboard + mouse device can have 3,4 HID interfaces
+#define CFG_TUH_HID (3 * CFG_TUH_DEVICE_MAX)
+
+// Number of CDC interfaces
+// FTDI and CP210x are not part of CDC class, only to re-use CDC driver API
+#define CFG_TUH_CDC 1
+#define CFG_TUH_CDC_FTDI 1
+#define CFG_TUH_CDC_CP210X 1
+
+// RX & TX fifo size
+#define CFG_TUH_CDC_RX_BUFSIZE 64
+#define CFG_TUH_CDC_TX_BUFSIZE 64
+
+// Set Line Control state on enumeration/mounted:
+// DTR ( bit 0), RTS (bit 1)
+#define CFG_TUH_CDC_LINE_CONTROL_ON_ENUM 0x03
+
+// Set Line Coding on enumeration/mounted, value for cdc_line_coding_t
+// bit rate = 115200, 1 stop bit, no parity, 8 bit data width
+// This need Pico-PIO-USB at least 0.5.1
+#define CFG_TUH_CDC_LINE_CODING_ON_ENUM                                        \
+  { 115200, CDC_LINE_CONDING_STOP_BITS_1, CDC_LINE_CODING_PARITY_NONE, 8 }
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/portable/analog/max3421/hcd_max3421.c b/src/portable/analog/max3421/hcd_max3421.c
index 866e9e1c..b879ab56 100644
--- a/src/portable/analog/max3421/hcd_max3421.c
+++ b/src/portable/analog/max3421/hcd_max3421.c
@@ -428,8 +428,8 @@ bool hcd_init(uint8_t rhport) {
   reg_write(rhport, PINCTL_ADDR, PINCTL_FDUPSPI, false);
 
   // V1 is 0x01, V2 is 0x12, V3 is 0x13
-  // uint8_t const revision = reg_read(rhport, REVISION_ADDR, false);
-  // TU_LOG2_HEX(revision);
+// uint8_t const revision = reg_read(rhport, REVISION_ADDR, false);
+// TU_LOG2_HEX(revision);
 
   // reset
   reg_write(rhport, USBCTL_ADDR, USBCTL_CHIPRES, false);