diff --git a/dependencies/PawnIO/modules/SmbusI801.bin b/dependencies/PawnIO/modules/SmbusI801.bin
index 48cf3185..dddcb7dc 100644
Binary files a/dependencies/PawnIO/modules/SmbusI801.bin and b/dependencies/PawnIO/modules/SmbusI801.bin differ
diff --git a/dependencies/PawnIO/modules/SmbusNCT6793.bin b/dependencies/PawnIO/modules/SmbusNCT6793.bin
index 88a144f1..2ea00336 100644
Binary files a/dependencies/PawnIO/modules/SmbusNCT6793.bin and b/dependencies/PawnIO/modules/SmbusNCT6793.bin differ
diff --git a/dependencies/PawnIO/modules/SmbusPIIX4.bin b/dependencies/PawnIO/modules/SmbusPIIX4.bin
index bfd72c2f..cf660881 100644
Binary files a/dependencies/PawnIO/modules/SmbusPIIX4.bin and b/dependencies/PawnIO/modules/SmbusPIIX4.bin differ
diff --git a/i2c_smbus/Windows/i2c_smbus_pawnio.cpp b/i2c_smbus/Windows/i2c_smbus_pawnio.cpp
index e1469063..fe643f97 100644
--- a/i2c_smbus/Windows/i2c_smbus_pawnio.cpp
+++ b/i2c_smbus/Windows/i2c_smbus_pawnio.cpp
@@ -20,6 +20,39 @@
 
 std::unordered_map<std::string, int> i2c_smbus_pawnio::using_handle;
 
+s32 piix4_port_sel(HANDLE pawnio_handle, s32 port)
+{
+    const SIZE_T    in_size         = 1;
+    ULONG64         in[in_size]     = {(ULONG64)port};
+    const SIZE_T    out_size        = 1;
+    ULONG64         out[out_size];
+    SIZE_T          return_size;
+    HRESULT         status;
+
+    /*-----------------------------------------------------*\
+    | Execute PIIX4 port_sel ioctl                          |
+    \*-----------------------------------------------------*/
+    status = pawnio_execute(pawnio_handle, "ioctl_piix4_port_sel", in, in_size, out, 1, &return_size);
+
+    return(status ? -EIO : 0);
+}
+
+s32 set_sleep_mode(HANDLE pawnio_handle, s32 sleep_mode)
+{
+    const SIZE_T    in_size         = 1;
+    ULONG64         in[in_size]     = {(ULONG64)sleep_mode};
+    const SIZE_T    out_size        = 0;
+    SIZE_T          return_size;
+    HRESULT         status;
+
+    /*-----------------------------------------------------*\
+    | Execute PIIX4 port_sel ioctl                          |
+    \*-----------------------------------------------------*/
+    status = pawnio_execute(pawnio_handle, "ioctl_set_sleep_mode", in, in_size, NULL, 1, &return_size);
+
+    return(status ? -EIO : 0);
+}
+
 i2c_smbus_pawnio::i2c_smbus_pawnio(HANDLE handle, std::string name)
 {
     /*-----------------------------------------------------*\
@@ -49,23 +82,23 @@ i2c_smbus_pawnio::i2c_smbus_pawnio(HANDLE handle, std::string name)
 
     if(!status)
     {
-        this->pci_vendor            = (out[2] & 0x000000000000FFFF);
-        this->pci_device            = (out[2] & 0x00000000FFFF0000) >> 16;
-        this->pci_subsystem_vendor  = (out[2] & 0x0000FFFF0000FFFF) >> 32;
-        this->pci_subsystem_device  = (out[2] & 0xFFFF000000000000) >> 48;
+        this->pci_vendor            = (int)(out[2] & 0x000000000000FFFF);
+        this->pci_device            = (int)((out[2] & 0x00000000FFFF0000) >> 16);
+        this->pci_subsystem_vendor  = (int)((out[2] & 0x0000FFFF0000FFFF) >> 32);
+        this->pci_subsystem_device  = (int)((out[2] & 0xFFFF000000000000) >> 48);
 
         char name_str[9];
-        name_str[0]                 = (out[0] & 0x00000000000000FF);
-        name_str[1]                 = (out[0] & 0x000000000000FF00) >> 8;
-        name_str[2]                 = (out[0] & 0x0000000000FF0000) >> 16;
-        name_str[3]                 = (out[0] & 0x00000000FF000000) >> 24;
-        name_str[4]                 = (out[0] & 0x000000FF00000000) >> 32;
-        name_str[5]                 = (out[0] & 0x0000FF0000000000) >> 40;
-        name_str[6]                 = (out[0] & 0x00FF000000000000) >> 48;
-        name_str[7]                 = (out[0] & 0xFF00000000000000) >> 56;
+        name_str[0]                 = (char)(out[0] & 0x00000000000000FF);
+        name_str[1]                 = (char)((out[0] & 0x000000000000FF00) >> 8);
+        name_str[2]                 = (char)((out[0] & 0x0000000000FF0000) >> 16);
+        name_str[3]                 = (char)((out[0] & 0x00000000FF000000) >> 24);
+        name_str[4]                 = (char)((out[0] & 0x000000FF00000000) >> 32);
+        name_str[5]                 = (char)((out[0] & 0x0000FF0000000000) >> 40);
+        name_str[6]                 = (char)((out[0] & 0x00FF000000000000) >> 48);
+        name_str[7]                 = (char)((out[0] & 0xFF00000000000000) >> 56);
         name_str[8]                 = 0;
 
-        strncpy( this->device_name, name_str, 512 );
+        strncpy(this->device_name, name_str, 512 );
     }
 
     /*-----------------------------------------------------*\
@@ -79,6 +112,26 @@ i2c_smbus_pawnio::i2c_smbus_pawnio(HANDLE handle, std::string name)
     }
 
     /*-----------------------------------------------------*\
+    | Get shared SMBus access setting                       |
+    \*-----------------------------------------------------*/
+    unsigned int smbus_sleep_mode = PAWNIO_SLEEPMODE_ALWAYSSLEEP;
+
+    if(drivers_settings.contains("smbus_sleep_mode"))
+    {
+        smbus_sleep_mode = drivers_settings["smbus_sleep_mode"];
+    }
+
+    if(smbus_sleep_mode >= PAWNIO_SLEEPMODE_MAX)
+    {
+        smbus_sleep_mode = PAWNIO_SLEEPMODE_ALWAYSSLEEP;
+    }
+
+    /*-----------------------------------------------------*\
+    | Initialize sleep mode                                 |
+    \*-----------------------------------------------------*/
+    set_sleep_mode(handle, smbus_sleep_mode);
+
+    /*-----------------------------------------------------*\
     | Create global SMBus mutex if enabled                  |
     \*-----------------------------------------------------*/
     if(shared_smbus_access)
@@ -274,23 +327,6 @@ HRESULT i2c_smbus_pawnio::start_pawnio(std::string filename, PHANDLE phandle)
     return(S_OK);
 }
 
-s32 piix4_port_sel(HANDLE pawnio_handle, s32 port)
-{
-    const SIZE_T    in_size         = 1;
-    ULONG64         in[in_size]     = {(ULONG64)port};
-    const SIZE_T    out_size        = 1;
-    ULONG64         out[out_size];
-    SIZE_T          return_size;
-    HRESULT         status;
-
-    /*-----------------------------------------------------*\
-    | Execute PIIX4 port_sel ioctl                          |
-    \*-----------------------------------------------------*/
-    status = pawnio_execute(pawnio_handle, "ioctl_piix4_port_sel", in, in_size, out, 1, &return_size);
-
-    return(status ? -EIO : 0);
-}
-
 bool i2c_smbus_pawnio_detect()
 {
     ULONG dll_version;
@@ -331,7 +367,7 @@ bool i2c_smbus_pawnio_detect()
     \*-----------------------------------------------------*/
     if(i2c_smbus_pawnio::start_pawnio("SmbusPIIX4.bin", &pawnio_handle) == S_OK)
     {
-        /*--------------------------------------------------*\
+        /*-------------------------------------------------*\
         | Select port 1                                     |
         \*-------------------------------------------------*/
         piix4_port_sel(pawnio_handle, 1);
diff --git a/i2c_smbus/Windows/i2c_smbus_pawnio.h b/i2c_smbus/Windows/i2c_smbus_pawnio.h
index 7a27ae83..05f609ea 100644
--- a/i2c_smbus/Windows/i2c_smbus_pawnio.h
+++ b/i2c_smbus/Windows/i2c_smbus_pawnio.h
@@ -21,6 +21,14 @@
 
 #define GLOBAL_SMBUS_MUTEX_NAME "Global\\Access_SMBUS.HTP.Method"
 
+enum
+{
+    PAWNIO_SLEEPMODE_ALWAYSBUSY     = 0,
+    PAWNIO_SLEEPMODE_SHORTBUSY      = 1,
+    PAWNIO_SLEEPMODE_ALWAYSSLEEP    = 2,
+    PAWNIO_SLEEPMODE_MAX
+};
+
 class i2c_smbus_pawnio : public i2c_smbus_interface
 {
 public: