diff --git a/Source/HBIOS/Config/RCEZ80_std.asm b/Source/HBIOS/Config/RCEZ80_std.asm
index c6ba7487..97c6a788 100644
--- a/Source/HBIOS/Config/RCEZ80_std.asm
+++ b/Source/HBIOS/Config/RCEZ80_std.asm
@@ -87,6 +87,7 @@ CHENABLE	.SET	FALSE		; CH: ENABLE CH375/376 USB SUPPORT
 CH0USBENABLE	.SET	FALSE		; CH375: ENABLE CH375 USB DRIVER
 CH1USBENABLE	.SET	FALSE		; CH376: ENABLE CH376 USB DRIVER
 CHNATIVEENABLE	.SET	TRUE		; CH376: ENABLE CH376 NATIVE USB DRIVER
+CHNATIVEFORCE	.SET	TRUE		; CH376: DISABLE AUTO-DETECTION OF MODULE - ASSUME ITS INSTALLED
 CHSCSIENABLE	.SET	TRUE		; CH376: ENABLE CH376 NATIVE MASS STORAGE DEVICES (REQUIRES CHNATIVEENABLE)
 CHUFIENABLE	.SET	TRUE		; CH376: ENABLE CH376 NATIVE UFI FLOPPY DISK DEVICES (REQUIRES CHNATIVEENABLE)
 
diff --git a/Source/HBIOS/ch376-native/base-drv/ch376.c.s b/Source/HBIOS/ch376-native/base-drv/ch376.c.s
index 746f8893..48b93254 100644
--- a/Source/HBIOS/ch376-native/base-drv/ch376.c.s
+++ b/Source/HBIOS/ch376-native/base-drv/ch376.c.s
@@ -539,9 +539,10 @@ l_ch_data_in_transfer_00107:
 	pop	bc
 ;source-doc/base-drv/ch376.c:172: if (count == 0) {
 	ld	a, e
-;source-doc/base-drv/ch376.c:173: USB_MODULE_LEDS = 0x00;
 	or	a
 	jr	NZ,l_ch_data_in_transfer_00106
+;source-doc/base-drv/ch376.c:173: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
 	ld	bc,_USB_MODULE_LEDS
 	out	(c),a
 ;source-doc/base-drv/ch376.c:174: return USB_ERR_DATA_ERROR;
@@ -571,24 +572,28 @@ l_ch_data_in_transfer_00148:
 	xor	0x80
 l_ch_data_in_transfer_00149:
 	jp	M, l_ch_data_in_transfer_00107
-;source-doc/base-drv/ch376.c:181: USB_MODULE_LEDS = 0x00;
-	ld	a,0x00
+;source-doc/base-drv/ch376.c:181: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
 	ld	bc,_USB_MODULE_LEDS
 	out	(c),a
-;source-doc/base-drv/ch376.c:183: return USB_ERR_OK;
+;source-doc/base-drv/ch376.c:182: return USB_ERR_OK;
 	ld	l,0x00
 	jr	l_ch_data_in_transfer_00111
 ;source-doc/base-drv/ch376.c:184: done:
 l_ch_data_in_transfer_00110:
-;source-doc/base-drv/ch376.c:185: return result;
+;source-doc/base-drv/ch376.c:185: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/ch376.c:186: return result;
 	ld	hl,(_result)
 	ld	h,+((_result) / 256)
 l_ch_data_in_transfer_00111:
-;source-doc/base-drv/ch376.c:186: }
+;source-doc/base-drv/ch376.c:187: }
 	ld	sp, ix
 	pop	ix
 	ret
-;source-doc/base-drv/ch376.c:188: usb_error ch_data_in_transfer_n(uint8_t *const buffer, int8_t *const buffer_size, endpoint_param *const endpoint) {
+;source-doc/base-drv/ch376.c:189: usb_error ch_data_in_transfer_n(uint8_t *const buffer, int8_t *const buffer_size, endpoint_param *const endpoint) {
 ; ---------------------------------
 ; Function ch_data_in_transfer_n
 ; ---------------------------------
@@ -596,21 +601,21 @@ _ch_data_in_transfer_n:
 	push	ix
 	ld	ix,0
 	add	ix,sp
-;source-doc/base-drv/ch376.c:192: USB_MODULE_LEDS = 0x01;
+;source-doc/base-drv/ch376.c:193: USB_MODULE_LEDS = 0x01;
 	ld	a,0x01
 	ld	bc,_USB_MODULE_LEDS
 	out	(c),a
-;source-doc/base-drv/ch376.c:194: ch_issue_token_in(endpoint);
+;source-doc/base-drv/ch376.c:195: ch_issue_token_in(endpoint);
 	ld	l,(ix+8)
 	ld	h,(ix+9)
 	call	_ch_issue_token_in
-;source-doc/base-drv/ch376.c:196: CHECK(ch_long_wait_int_and_get_status());
+;source-doc/base-drv/ch376.c:197: CHECK(ch_long_wait_int_and_get_status());
 	call	_ch_long_wait_int_and_get_statu
 	ld	a, l
 	ld	b, a
 	or	a
 	jr	NZ,l_ch_data_in_transfer_n_00103
-;source-doc/base-drv/ch376.c:198: endpoint->toggle = !endpoint->toggle;
+;source-doc/base-drv/ch376.c:199: endpoint->toggle = !endpoint->toggle;
 	ld	e,(ix+8)
 	ld	d,(ix+9)
 	ld	c, e
@@ -625,30 +630,36 @@ _ch_data_in_transfer_n:
 	and	0xfe
 	or	e
 	ld	(bc), a
-;source-doc/base-drv/ch376.c:200: count = ch_read_data(buffer);
+;source-doc/base-drv/ch376.c:201: count = ch_read_data(buffer);
 	ld	l,(ix+4)
 	ld	h,(ix+5)
 	call	_ch_read_data
-;source-doc/base-drv/ch376.c:202: *buffer_size = count;
+;source-doc/base-drv/ch376.c:203: *buffer_size = count;
 	ld	c,(ix+6)
 	ld	b,(ix+7)
 	ld	(bc), a
-;source-doc/base-drv/ch376.c:204: USB_MODULE_LEDS = 0x00;
-	ld	a,0x00
+;source-doc/base-drv/ch376.c:205: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
 	ld	bc,_USB_MODULE_LEDS
 	out	(c),a
-;source-doc/base-drv/ch376.c:206: return USB_ERR_OK;
+;source-doc/base-drv/ch376.c:207: return USB_ERR_OK;
 	ld	l,0x00
 	jr	l_ch_data_in_transfer_n_00104
-;source-doc/base-drv/ch376.c:207: done:
+;source-doc/base-drv/ch376.c:208: done:
 l_ch_data_in_transfer_n_00103:
-;source-doc/base-drv/ch376.c:208: return result;
+;source-doc/base-drv/ch376.c:209: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
+	push	bc
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+	pop	bc
+;source-doc/base-drv/ch376.c:210: return result;
 	ld	l, b
 l_ch_data_in_transfer_n_00104:
-;source-doc/base-drv/ch376.c:209: }
+;source-doc/base-drv/ch376.c:211: }
 	pop	ix
 	ret
-;source-doc/base-drv/ch376.c:211: usb_error ch_data_out_transfer(const uint8_t *buffer, int16_t buffer_length, endpoint_param *const endpoint) {
+;source-doc/base-drv/ch376.c:213: usb_error ch_data_out_transfer(const uint8_t *buffer, int16_t buffer_length, endpoint_param *const endpoint) {
 ; ---------------------------------
 ; Function ch_data_out_transfer
 ; ---------------------------------
@@ -658,7 +669,7 @@ _ch_data_out_transfer:
 	add	ix,sp
 	push	af
 	dec	sp
-;source-doc/base-drv/ch376.c:214: const uint8_t max_packet_size = calc_max_packet_size(endpoint->max_packet_sizex);
+;source-doc/base-drv/ch376.c:216: const uint8_t max_packet_size = calc_max_packet_size(endpoint->max_packet_sizex);
 	ld	c,(ix+8)
 	ld	b,(ix+9)
 	ld	e, c
@@ -666,13 +677,13 @@ _ch_data_out_transfer:
 	inc	de
 	ld	a, (de)
 	ld	(ix-3),a
-;source-doc/base-drv/ch376.c:216: USB_MODULE_LEDS = 0x02;
+;source-doc/base-drv/ch376.c:218: USB_MODULE_LEDS = 0x02;
 	ld	a,0x02
 	push	bc
 	ld	bc,_USB_MODULE_LEDS
 	out	(c),a
 	pop	bc
-;source-doc/base-drv/ch376.c:218: while (buffer_length > 0) {
+;source-doc/base-drv/ch376.c:220: while (buffer_length > 0) {
 	ld	(ix-2),c
 	ld	(ix-1),b
 l_ch_data_out_transfer_00103:
@@ -683,7 +694,7 @@ l_ch_data_out_transfer_00103:
 	xor	0x80
 l_ch_data_out_transfer_00139:
 	jp	P, l_ch_data_out_transfer_00105
-;source-doc/base-drv/ch376.c:219: const uint8_t size = max_packet_size < buffer_length ? max_packet_size : buffer_length;
+;source-doc/base-drv/ch376.c:221: const uint8_t size = max_packet_size < buffer_length ? max_packet_size : buffer_length;
 	ld	d,(ix-3)
 	ld	e,0x00
 	ld	a, d
@@ -699,7 +710,7 @@ l_ch_data_out_transfer_00109:
 	ld	d,(ix+6)
 	ld	e,(ix+7)
 l_ch_data_out_transfer_00110:
-;source-doc/base-drv/ch376.c:220: buffer             = ch_write_data(buffer, size);
+;source-doc/base-drv/ch376.c:222: buffer             = ch_write_data(buffer, size);
 	push	bc
 	push	de
 	push	de
@@ -714,7 +725,7 @@ l_ch_data_out_transfer_00110:
 	pop	bc
 	ld	(ix+4),l
 	ld	(ix+5),h
-;source-doc/base-drv/ch376.c:221: buffer_length -= size;
+;source-doc/base-drv/ch376.c:223: buffer_length -= size;
 	ld	e,0x00
 	ld	a,(ix+6)
 	sub	d
@@ -722,7 +733,7 @@ l_ch_data_out_transfer_00110:
 	ld	a,(ix+7)
 	sbc	a, e
 	ld	(ix+7),a
-;source-doc/base-drv/ch376.c:222: ch_issue_token_out(endpoint);
+;source-doc/base-drv/ch376.c:224: ch_issue_token_out(endpoint);
 	ld	l,c
 	ld	h,b
 	push	hl
@@ -733,7 +744,7 @@ l_ch_data_out_transfer_00110:
 	ld	l, a
 	or	a
 	jr	NZ,l_ch_data_out_transfer_00106
-;source-doc/base-drv/ch376.c:226: endpoint->toggle = !endpoint->toggle;
+;source-doc/base-drv/ch376.c:228: endpoint->toggle = !endpoint->toggle;
 	ld	e, c
 	ld	d, b
 	ld	l,(ix-2)
@@ -749,34 +760,40 @@ l_ch_data_out_transfer_00110:
 	ld	(de), a
 	jr	l_ch_data_out_transfer_00103
 l_ch_data_out_transfer_00105:
-;source-doc/base-drv/ch376.c:229: USB_MODULE_LEDS = 0x00;
-	ld	a,0x00
+;source-doc/base-drv/ch376.c:231: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
 	ld	bc,_USB_MODULE_LEDS
 	out	(c),a
-;source-doc/base-drv/ch376.c:231: return USB_ERR_OK;
+;source-doc/base-drv/ch376.c:232: return USB_ERR_OK;
 	ld	l,0x00
-;source-doc/base-drv/ch376.c:232: done:
-;source-doc/base-drv/ch376.c:233: return result;
+	jr	l_ch_data_out_transfer_00107
+;source-doc/base-drv/ch376.c:234: done:
 l_ch_data_out_transfer_00106:
-;source-doc/base-drv/ch376.c:234: }
+;source-doc/base-drv/ch376.c:235: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/ch376.c:236: return result;
+l_ch_data_out_transfer_00107:
+;source-doc/base-drv/ch376.c:237: }
 	ld	sp, ix
 	pop	ix
 	ret
-;source-doc/base-drv/ch376.c:236: void ch_set_usb_address(const uint8_t device_address) __z88dk_fastcall {
+;source-doc/base-drv/ch376.c:239: void ch_set_usb_address(const uint8_t device_address) __z88dk_fastcall {
 ; ---------------------------------
 ; Function ch_set_usb_address
 ; ---------------------------------
 _ch_set_usb_address:
-;source-doc/base-drv/ch376.c:237: ch_command(CH_CMD_SET_USB_ADDR);
+;source-doc/base-drv/ch376.c:240: ch_command(CH_CMD_SET_USB_ADDR);
 	push	hl
 	ld	l,0x13
 	call	_ch_command
 	pop	hl
-;source-doc/base-drv/ch376.c:238: CH376_DATA_PORT = device_address;
+;source-doc/base-drv/ch376.c:241: CH376_DATA_PORT = device_address;
 	ld	a, l
 	ld	bc,_CH376_DATA_PORT
 	out	(c),a
-;source-doc/base-drv/ch376.c:239: }
+;source-doc/base-drv/ch376.c:242: }
 	ret
 _result:
 	DEFB +0x00
diff --git a/Source/HBIOS/ch376-native/base-drv/usb-init.c.s b/Source/HBIOS/ch376-native/base-drv/usb-init.c.s
index 34a0654d..d4e25782 100644
--- a/Source/HBIOS/ch376-native/base-drv/usb-init.c.s
+++ b/Source/HBIOS/ch376-native/base-drv/usb-init.c.s
@@ -100,73 +100,92 @@ __chnative_init:
 	inc	de
 	ld	bc,0x0068
 	ldir
-;source-doc/base-drv/usb-init.c:28: ch_cmd_reset_all();
+;source-doc/base-drv/usb-init.c:28: USB_MODULE_LEDS = 0x00;
+	ld	a,0x00
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/usb-init.c:30: ch_cmd_reset_all();
 	call	_ch_cmd_reset_all
-;source-doc/base-drv/usb-init.c:30: delay_medium();
+;source-doc/base-drv/usb-init.c:32: delay_medium();
 	call	_delay_medium
-;source-doc/base-drv/usb-init.c:32: if (forced) {
+;source-doc/base-drv/usb-init.c:34: if (forced) {
 	bit	0,(ix+4)
 	jr	Z,l__chnative_init_00110
-;source-doc/base-drv/usb-init.c:33: bool indicator = true;
+;source-doc/base-drv/usb-init.c:35: bool indicator = true;
 	ld	(ix-1),0x01
-;source-doc/base-drv/usb-init.c:34: print_string("\r\nCH376: *$");
+;source-doc/base-drv/usb-init.c:36: print_string("\r\nCH376: *$");
 	ld	hl,usb_init_str_0
 	call	_print_string
-;source-doc/base-drv/usb-init.c:35: while (!ch_probe()) {
+;source-doc/base-drv/usb-init.c:37: while (!ch_probe()) {
 l__chnative_init_00104:
 	call	_ch_probe
 	ld	a, l
 	or	a
 	jr	NZ,l__chnative_init_00106
-;source-doc/base-drv/usb-init.c:36: if (indicator)
+;source-doc/base-drv/usb-init.c:38: if (indicator) {
 	bit	0,(ix-1)
 	jr	Z,l__chnative_init_00102
-;source-doc/base-drv/usb-init.c:37: print_string("\b $");
+;source-doc/base-drv/usb-init.c:39: USB_MODULE_LEDS = 0x00;
+	ld	a,0x00
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/usb-init.c:40: print_string("\b $");
 	ld	hl,usb_init_str_1
 	call	_print_string
 	jr	l__chnative_init_00103
 l__chnative_init_00102:
-;source-doc/base-drv/usb-init.c:39: print_string("\b*$");
+;source-doc/base-drv/usb-init.c:42: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/usb-init.c:43: print_string("\b*$");
 	ld	hl,usb_init_str_2
 	call	_print_string
 l__chnative_init_00103:
-;source-doc/base-drv/usb-init.c:41: delay_medium();
+;source-doc/base-drv/usb-init.c:46: delay_medium();
 	call	_delay_medium
-;source-doc/base-drv/usb-init.c:42: indicator = !indicator;
+;source-doc/base-drv/usb-init.c:47: indicator = !indicator;
 	ld	a,(ix-1)
 	xor	0x01
 	ld	(ix-1),a
 	jr	l__chnative_init_00104
 l__chnative_init_00106:
-;source-doc/base-drv/usb-init.c:45: print_string("\bPRESENT (VER $");
+;source-doc/base-drv/usb-init.c:50: print_string("\bPRESENT (VER $");
 	ld	hl,usb_init_str_3
 	call	_print_string
 	jr	l__chnative_init_00111
 l__chnative_init_00110:
-;source-doc/base-drv/usb-init.c:47: if (!ch_probe()) {
+;source-doc/base-drv/usb-init.c:52: if (!ch_probe()) {
 	call	_ch_probe
 	ld	a, l
+;source-doc/base-drv/usb-init.c:53: USB_MODULE_LEDS = 0x00;
 	or	a
 	jr	NZ,l__chnative_init_00108
-;source-doc/base-drv/usb-init.c:48: print_string("\r\nCH376: NOT PRESENT$");
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/usb-init.c:54: print_string("\r\nCH376: NOT PRESENT$");
 	ld	hl,usb_init_str_4
 	call	_print_string
-;source-doc/base-drv/usb-init.c:49: return;
+;source-doc/base-drv/usb-init.c:55: return;
 	jr	l__chnative_init_00118
 l__chnative_init_00108:
-;source-doc/base-drv/usb-init.c:52: print_string("\r\nCH376: PRESENT (VER $");
+;source-doc/base-drv/usb-init.c:58: print_string("\r\nCH376: PRESENT (VER $");
 	ld	hl,usb_init_str_5
 	call	_print_string
 l__chnative_init_00111:
-;source-doc/base-drv/usb-init.c:55: print_hex(ch_cmd_get_ic_version());
+;source-doc/base-drv/usb-init.c:61: USB_MODULE_LEDS = 0x01;
+	ld	a,0x01
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/usb-init.c:63: print_hex(ch_cmd_get_ic_version());
 	call	_ch_cmd_get_ic_version
 	call	_print_hex
-;source-doc/base-drv/usb-init.c:56: print_string("); $");
+;source-doc/base-drv/usb-init.c:64: print_string("); $");
 	ld	hl,usb_init_str_6
 	call	_print_string
-;source-doc/base-drv/usb-init.c:58: usb_host_bus_reset();
+;source-doc/base-drv/usb-init.c:66: usb_host_bus_reset();
 	call	_usb_host_bus_reset
-;source-doc/base-drv/usb-init.c:60: for (uint8_t i = 0; i < (forced ? 10 : 5); i++) {
+;source-doc/base-drv/usb-init.c:68: for (uint8_t i = 0; i < (forced ? 10 : 5); i++) {
 	ld	c,0x00
 l__chnative_init_00116:
 	bit	0,(ix+4)
@@ -186,31 +205,39 @@ l__chnative_init_00121:
 	xor	0x80
 l__chnative_init_00185:
 	jp	P, l__chnative_init_00114
-;source-doc/base-drv/usb-init.c:61: const uint8_t r = ch_very_short_wait_int_and_get_();
+;source-doc/base-drv/usb-init.c:69: const uint8_t r = ch_very_short_wait_int_and_get_();
 	push	bc
 	call	_ch_very_short_wait_int_and_get
 	ld	a, l
 	pop	bc
-;source-doc/base-drv/usb-init.c:63: if (r == USB_INT_CONNECT) {
+;source-doc/base-drv/usb-init.c:71: if (r == USB_INT_CONNECT) {
 	sub	0x81
 	jr	NZ,l__chnative_init_00117
-;source-doc/base-drv/usb-init.c:64: print_string("USB: CONNECTED$");
+;source-doc/base-drv/usb-init.c:72: print_string("USB: CONNECTED$");
 	ld	hl,usb_init_str_7
 	call	_print_string
-;source-doc/base-drv/usb-init.c:66: enumerate_all_devices();
+;source-doc/base-drv/usb-init.c:74: enumerate_all_devices();
 	call	_enumerate_all_devices
-;source-doc/base-drv/usb-init.c:68: return;
+;source-doc/base-drv/usb-init.c:76: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/usb-init.c:77: return;
 	jr	l__chnative_init_00118
 l__chnative_init_00117:
-;source-doc/base-drv/usb-init.c:60: for (uint8_t i = 0; i < (forced ? 10 : 5); i++) {
+;source-doc/base-drv/usb-init.c:68: for (uint8_t i = 0; i < (forced ? 10 : 5); i++) {
 	inc	c
 	jr	l__chnative_init_00116
 l__chnative_init_00114:
-;source-doc/base-drv/usb-init.c:72: print_string("USB: DISCONNECTED$");
+;source-doc/base-drv/usb-init.c:81: USB_MODULE_LEDS = 0x00;
+	ld	a,0x00
+	ld	bc,_USB_MODULE_LEDS
+	out	(c),a
+;source-doc/base-drv/usb-init.c:82: print_string("USB: DISCONNECTED$");
 	ld	hl,usb_init_str_8
 	call	_print_string
 l__chnative_init_00118:
-;source-doc/base-drv/usb-init.c:73: }
+;source-doc/base-drv/usb-init.c:83: }
 	inc	sp
 	pop	ix
 	ret
@@ -250,7 +277,7 @@ usb_init_str_7:
 usb_init_str_8:
 	DEFM "USB: DISCONNECTED$"
 	DEFB 0x00
-;source-doc/base-drv/usb-init.c:75: void chnative_init_force(void) { _chnative_init(true); }
+;source-doc/base-drv/usb-init.c:85: void chnative_init_force(void) { _chnative_init(true); }
 ; ---------------------------------
 ; Function chnative_init_force
 ; ---------------------------------
@@ -261,7 +288,7 @@ _chnative_init_force:
 	call	__chnative_init
 	inc	sp
 	ret
-;source-doc/base-drv/usb-init.c:77: void chnative_init(void) { _chnative_init(false); }
+;source-doc/base-drv/usb-init.c:87: void chnative_init(void) { _chnative_init(false); }
 ; ---------------------------------
 ; Function chnative_init
 ; ---------------------------------
diff --git a/Source/HBIOS/ch376-native/source-doc/base-drv/ch376.c b/Source/HBIOS/ch376-native/source-doc/base-drv/ch376.c
index c939f819..c26a70d3 100644
--- a/Source/HBIOS/ch376-native/source-doc/base-drv/ch376.c
+++ b/Source/HBIOS/ch376-native/source-doc/base-drv/ch376.c
@@ -170,7 +170,7 @@ usb_error ch_data_in_transfer(uint8_t *buffer, int16_t buffer_size, endpoint_par
     count = ch_read_data(buffer);
 
     if (count == 0) {
-      USB_MODULE_LEDS = 0x00;
+      USB_MODULE_LEDS = 0x03;
       return USB_ERR_DATA_ERROR;
     }
 
@@ -178,10 +178,11 @@ usb_error ch_data_in_transfer(uint8_t *buffer, int16_t buffer_size, endpoint_par
     buffer_size -= count;
   } while (buffer_size > 0);
 
-  USB_MODULE_LEDS = 0x00;
-
+  USB_MODULE_LEDS = 0x03;
   return USB_ERR_OK;
+
 done:
+  USB_MODULE_LEDS = 0x03;
   return result;
 }
 
@@ -201,10 +202,11 @@ usb_error ch_data_in_transfer_n(uint8_t *const buffer, int8_t *const buffer_size
 
   *buffer_size = count;
 
-  USB_MODULE_LEDS = 0x00;
+  USB_MODULE_LEDS = 0x03;
 
   return USB_ERR_OK;
 done:
+  USB_MODULE_LEDS = 0x03;
   return result;
 }
 
@@ -226,10 +228,11 @@ usb_error ch_data_out_transfer(const uint8_t *buffer, int16_t buffer_length, end
     endpoint->toggle = !endpoint->toggle;
   }
 
-  USB_MODULE_LEDS = 0x00;
-
+  USB_MODULE_LEDS = 0x03;
   return USB_ERR_OK;
+
 done:
+  USB_MODULE_LEDS = 0x03;
   return result;
 }
 
diff --git a/Source/HBIOS/ch376-native/source-doc/base-drv/usb-init.c b/Source/HBIOS/ch376-native/source-doc/base-drv/usb-init.c
index 7adbadea..fa7ba6f0 100644
--- a/Source/HBIOS/ch376-native/source-doc/base-drv/usb-init.c
+++ b/Source/HBIOS/ch376-native/source-doc/base-drv/usb-init.c
@@ -25,6 +25,8 @@ static usb_error usb_host_bus_reset(void) {
 void _chnative_init(bool forced) {
   memset(get_usb_work_area(), 0, sizeof(_usb_state));
 
+  USB_MODULE_LEDS = 0x00;
+
   ch_cmd_reset_all();
 
   delay_medium();
@@ -33,10 +35,13 @@ void _chnative_init(bool forced) {
     bool indicator = true;
     print_string("\r\nCH376: *$");
     while (!ch_probe()) {
-      if (indicator)
+      if (indicator) {
+        USB_MODULE_LEDS = 0x00;
         print_string("\b $");
-      else
+      } else {
+        USB_MODULE_LEDS = 0x03;
         print_string("\b*$");
+      }
 
       delay_medium();
       indicator = !indicator;
@@ -45,6 +50,7 @@ void _chnative_init(bool forced) {
     print_string("\bPRESENT (VER $");
   } else {
     if (!ch_probe()) {
+      USB_MODULE_LEDS = 0x00;
       print_string("\r\nCH376: NOT PRESENT$");
       return;
     }
@@ -52,6 +58,8 @@ void _chnative_init(bool forced) {
     print_string("\r\nCH376: PRESENT (VER $");
   }
 
+  USB_MODULE_LEDS = 0x01;
+
   print_hex(ch_cmd_get_ic_version());
   print_string("); $");
 
@@ -65,10 +73,12 @@ void _chnative_init(bool forced) {
 
       enumerate_all_devices();
 
+      USB_MODULE_LEDS = 0x03;
       return;
     }
   }
 
+  USB_MODULE_LEDS = 0x00;
   print_string("USB: DISCONNECTED$");
 }