diff --git a/src/usb/ccid/ccid.c b/src/usb/ccid/ccid.c
index 372e1b8..8f61d8a 100644
--- a/src/usb/ccid/ccid.c
+++ b/src/usb/ccid/ccid.c
@@ -122,6 +122,9 @@ uint8_t sc_itf_to_usb_itf(uint8_t itf) {
 }
 
 void ccid_init_buffers() {
+    if (ITF_SC_TOTAL == 0) {
+        return;
+    }
     if (ccid_rx == NULL) {
         ccid_rx = (usb_buffer_t *)calloc(ITF_SC_TOTAL, sizeof(usb_buffer_t));
     }
@@ -170,11 +173,6 @@ void tud_vendor_rx_cb(uint8_t itf, const uint8_t *buffer, uint16_t bufsize) {
     } while (len > 0);
 }
 
-void tud_vendor_tx_cb(uint8_t itf, uint32_t sent_bytes) {
-    (void) sent_bytes;
-    tud_vendor_n_write_flush(itf);
-}
-
 int driver_write_ccid(uint8_t itf, const uint8_t *tx_buffer, uint16_t buffer_size) {
     if (*tx_buffer != 0x81) {
         DEBUG_PAYLOAD(tx_buffer, buffer_size);
@@ -346,16 +344,17 @@ void ccid_task() {
     }
 }
 
-#ifndef ENABLE_EMULATION
-
-#define USB_CONFIG_ATT_ONE TU_BIT(7)
-
-#define MAX_USB_POWER       1
-
 void ccid_init() {
     ccid_init_buffers();
 }
 
+#ifndef ENABLE_EMULATION
+
+void tud_vendor_tx_cb(uint8_t itf, uint32_t sent_bytes) {
+    (void) sent_bytes;
+    tud_vendor_n_write_flush(itf);
+}
+
 static void ccid_init_cb(void) {
     vendord_init();
 }
diff --git a/src/usb/emulation/emulation.c b/src/usb/emulation/emulation.c
index a53ac32..9c37a60 100644
--- a/src/usb/emulation/emulation.c
+++ b/src/usb/emulation/emulation.c
@@ -303,28 +303,24 @@ uint16_t emul_read(uint8_t itf) {
                             driver_write_emul(itf, ccid_atr ? ccid_atr + 1 : NULL, ccid_atr ? ccid_atr[0] : 0);
                         }
                     }
-                    else {
-                        switch(itf) {
 #ifdef USB_ITF_CCID
-                        case ITF_CCID: {
-                            uint16_t sent = 0;
-                            DEBUG_PAYLOAD(emul_rx, len);
-                            apdu.rdata = emul_tx;
-                            if ((sent = apdu_process(itf, emul_rx, len)) > 0) {
-                                process_apdu();
-                                apdu_finish();
-                            }
-                            if (sent > 0) {
-                                uint16_t ret = apdu_next();
-                                DEBUG_PAYLOAD(apdu.rdata, ret);
-                                driver_write_emul(itf, apdu.rdata, ret);
-                            }
-                            break;
+                    else if (itf == ITF_CCID) {
+                        uint16_t sent = 0;
+                        DEBUG_PAYLOAD(emul_rx, len);
+                        apdu.rdata = emul_tx;
+                        if ((sent = apdu_process(itf, emul_rx, len)) > 0) {
+                            process_apdu();
+                            apdu_finish();
                         }
+                        if (sent > 0) {
+                            uint16_t ret = apdu_next();
+                            DEBUG_PAYLOAD(apdu.rdata, ret);
+                            driver_write_emul(itf, apdu.rdata, ret);
+                        }
+                    }
 #endif
-                        default:
-                            emul_rx_size += valread;
-                        }
+                    else {
+                        emul_rx_size += valread;
                     }
                     return (uint16_t)emul_rx_size;
                 }
diff --git a/src/usb/hid/hid.c b/src/usb/hid/hid.c
index ad93013..d0ddd95 100644
--- a/src/usb/hid/hid.c
+++ b/src/usb/hid/hid.c
@@ -66,6 +66,9 @@ int driver_write_hid(uint8_t itf, const uint8_t *buffer, uint16_t buffer_size);
 int driver_process_usb_nopacket_hid();
 
 void hid_init() {
+    if (ITF_HID_TOTAL == 0) {
+        return;
+    }
     if (send_buffer_size == NULL) {
         send_buffer_size = (uint16_t *)calloc(ITF_HID_TOTAL, sizeof(uint16_t));
     }
diff --git a/src/usb/usb.c b/src/usb/usb.c
index bfebca8..5b5875f 100644
--- a/src/usb/usb.c
+++ b/src/usb/usb.c
@@ -45,15 +45,15 @@ static mutex_t mutex;
 #endif
 
 #ifdef USB_ITF_HID
-    uint8_t ITF_HID_CTAP = 0, ITF_HID_KB = 0;
-    uint8_t ITF_HID = 0, ITF_KEYBOARD = 0;
+    uint8_t ITF_HID_CTAP = ITF_INVALID, ITF_HID_KB = ITF_INVALID;
+    uint8_t ITF_HID = ITF_INVALID, ITF_KEYBOARD = ITF_INVALID;
     uint8_t ITF_HID_TOTAL = 0;
     extern void hid_init();
 #endif
 
 #ifdef USB_ITF_CCID
-    uint8_t ITF_SC_CCID = 0, ITF_SC_WCID = 0;
-    uint8_t ITF_CCID = 0, ITF_WCID = 0;
+    uint8_t ITF_SC_CCID = ITF_INVALID, ITF_SC_WCID = ITF_INVALID;
+    uint8_t ITF_CCID = ITF_INVALID, ITF_WCID = ITF_INVALID;
     uint8_t ITF_SC_TOTAL = 0;
     extern void ccid_init();
 #endif
@@ -80,6 +80,13 @@ void usb_init() {
     queue_init(&card_to_usb_q, sizeof(uint32_t), 64);
     queue_init(&usb_to_card_q, sizeof(uint32_t), 64);
 
+    uint8_t enabled_usb_itf = PHY_USB_ITF_CCID | PHY_USB_ITF_WCID | PHY_USB_ITF_HID | PHY_USB_ITF_KB;
+#ifndef ENABLE_EMULATION
+    if (phy_data.enabled_usb_itf_present) {
+        enabled_usb_itf = phy_data.enabled_usb_itf;
+    }
+#endif
+
 #ifdef USB_ITF_HID
     ITF_HID_TOTAL = 0;
 #endif
@@ -88,21 +95,21 @@ void usb_init() {
 #endif
     ITF_TOTAL = 0;
 #ifdef USB_ITF_HID
-    if (1) {
+    if (enabled_usb_itf & PHY_USB_ITF_HID) {
         ITF_HID_CTAP = ITF_HID_TOTAL++;
         ITF_HID = ITF_TOTAL++;
     }
-    if (1) {
+    if (enabled_usb_itf & PHY_USB_ITF_KB) {
         ITF_HID_KB = ITF_HID_TOTAL++;
         ITF_KEYBOARD = ITF_TOTAL++;
     }
 #endif
 #ifdef USB_ITF_CCID
-    if (1) {
+    if (enabled_usb_itf & PHY_USB_ITF_CCID) {
         ITF_SC_CCID = ITF_SC_TOTAL++;
         ITF_CCID = ITF_TOTAL++;
     }
-    if (1) {
+    if (enabled_usb_itf & PHY_USB_ITF_WCID) {
         ITF_SC_WCID = ITF_SC_TOTAL++;
         ITF_WCID = ITF_TOTAL++;
     }
@@ -112,10 +119,14 @@ void usb_init() {
         timeout_counter = (uint32_t *)calloc(ITF_TOTAL, sizeof(uint32_t));
     }
 #ifdef USB_ITF_HID
-    hid_init();
+    if (ITF_HID_TOTAL > 0) {
+        hid_init();
+    }
 #endif
 #ifdef USB_ITF_CCID
-    ccid_init();
+    if (ITF_SC_TOTAL > 0) {
+        ccid_init();
+    }
 #endif
 }
 
diff --git a/src/usb/usb.h b/src/usb/usb.h
index 545f674..06a799e 100644
--- a/src/usb/usb.h
+++ b/src/usb/usb.h
@@ -44,6 +44,8 @@
 #define EV_BUTTON_TIMEOUT        16
 #define EV_BUTTON_PRESSED        32
 
+static const uint8_t ITF_INVALID = 0xFF;
+
 #ifdef USB_ITF_HID
     extern uint8_t ITF_HID_CTAP, ITF_HID_KB;
     extern uint8_t ITF_HID, ITF_KEYBOARD;
diff --git a/src/usb/usb_descriptors.c b/src/usb/usb_descriptors.c
index d28b66a..f0f35ba 100644
--- a/src/usb/usb_descriptors.c
+++ b/src/usb/usb_descriptors.c
@@ -147,38 +147,38 @@ uint8_t const *tud_descriptor_configuration_cb(uint8_t index) {
     TUSB_DESC_TOTAL_LEN = TUD_CONFIG_DESC_LEN;
     uint8_t *p = desc_config + TUD_CONFIG_DESC_LEN;
 #ifdef USB_ITF_HID
-    if (1) {
+    if (ITF_HID != ITF_INVALID) {
         TUSB_DESC_TOTAL_LEN += TUD_HID_INOUT_DESC_LEN;
         const uint8_t desc[] = { TUD_HID_INOUT_DESCRIPTOR(0, 0, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report), EPNUM_HID, TUSB_DIR_IN_MASK | EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 10) };
         memcpy(p, desc, sizeof(desc));
         p[2] = ITF_HID;
-        p[8] = ITF_HID + 5;
+        p[8] = 5;
         p += sizeof(desc);
     }
-    if (1) {
+    if (ITF_KEYBOARD != ITF_INVALID) {
         TUSB_DESC_TOTAL_LEN += TUD_HID_DESC_LEN;
         const uint8_t desc_kb[] = { TUD_HID_DESCRIPTOR(ITF_KEYBOARD, ITF_KEYBOARD + 5, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report_kb), TUSB_DIR_IN_MASK | (EPNUM_HID + 1), 16, 5) };
         memcpy(p, desc_kb, sizeof(desc_kb));
         p[2] = ITF_KEYBOARD;
-        p[8] = ITF_KEYBOARD + 5;
+        p[8] = 6;
         p += sizeof(desc_kb);
     }
 #endif
 #ifdef USB_ITF_CCID
-    if (1) {
+    if (ITF_CCID != ITF_INVALID) {
         TUSB_DESC_TOTAL_LEN += TUSB_SMARTCARD_CCID_DESC_LEN;
         const uint8_t desc_ccid[] = { TUD_SMARTCARD_DESCRIPTOR(ITF_CCID, ITF_CCID+5, 1, TUSB_DIR_IN_MASK | 1, TUSB_DIR_IN_MASK | 2, 64) };
         memcpy(p, desc_ccid, sizeof(desc_ccid));
         p[2] = ITF_CCID;
-        p[8] = ITF_CCID + 5;
+        p[8] = 7;
         p += sizeof(desc_ccid);
     }
-    if (1) {
+    if (ITF_WCID != ITF_INVALID) {
         TUSB_DESC_TOTAL_LEN += TUSB_SMARTCARD_WCID_DESC_LEN;
         const uint8_t desc_wcid[] = { TUD_SMARTCARD_DESCRIPTOR_WEB(ITF_WCID, ITF_WCID+5, 3, TUSB_DIR_IN_MASK | 3, 64) };
         memcpy(p, desc_wcid, sizeof(desc_wcid));
         p[2] = ITF_WCID;
-        p[8] = ITF_WCID + 5;
+        p[8] = 8;
         p += sizeof(desc_wcid);
     }
 #endif
@@ -302,14 +302,10 @@ char const *string_desc_arr [] = {
     "Pico Key",                       // 2: Product
     "11223344",                      // 3: Serials, should use chip ID
     "Config"               // 4: Vendor Interface
-#ifdef USB_ITF_HID
     , "HID Interface"
     , "HID Keyboard Interface"
-#endif
-#ifdef USB_ITF_CCID
     , "CCID OTP FIDO Interface"
     , "WebCCID Interface"
-#endif
 };
 
 #ifdef ESP_PLATFORM