diff --git a/firmware/src/usb_descriptors.c b/firmware/src/usb_descriptors.c
index 47acd5f..3e167eb 100644
--- a/firmware/src/usb_descriptors.c
+++ b/firmware/src/usb_descriptors.c
@@ -27,18 +27,6 @@
 
 #include "tusb.h"
 
-/* A combination of interfaces must have a unique product id, since PC will save
- * device driver after the first plug. Same VID/PID with different interface e.g
- * MSC (first), then CDC (later) will possibly cause system error on PC.
- *
- * Auto ProductID layout's Bitmap:
- *   [MSB]         HID | MSC | CDC          [LSB]
- */
-#define _PID_MAP(itf, n) ((CFG_TUD_##itf) << (n))
-#define USB_PID                                                      \
-    (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
-     _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4))
-
 //--------------------------------------------------------------------+
 // Device Descriptors
 //--------------------------------------------------------------------+