diff --git a/docs/devices.md b/docs/devices.md
index 60602161..183f1605 100644
--- a/docs/devices.md
+++ b/docs/devices.md
@@ -195,6 +195,7 @@ setting is useful only to disable smooth scrolling.
 | MK270            | 4023 | 2.0   | yes     | reprog keys                             |
 | MK320            | 200F |       |         |                                         |
 | MK330            |      |       |         |                                         |
+| MK345            | 4023 | 2.0   | yes     | reprog keys                             |
 | MK520            |      | M2/K1 | yes     | FN swap, reprog keys                    |
 | MK550            |      |       |         |                                         |
 | MK700            | 2008 | 1.0   | yes     | FN swap, reprog keys                    |
diff --git a/docs/features.md b/docs/features.md
index 73bedebe..9b9025fa 100644
--- a/docs/features.md
+++ b/docs/features.md
@@ -44,7 +44,7 @@ Feature                                | ID       | Status             | Notes
 `REPROG_CONTROLS_V2`                   | `0x1B01` | :x:                |
 `REPROG_CONTROLS_V2_2`                 | `0x1B02` | :x:                |
 `REPROG_CONTROLS_V3`                   | `0x1B03` | :x:                |
-`REPROG_CONTROLS_V4`                   | `0x1B04` | :heavy_plus_sign:  | `get_keys()`, only listing
+`REPROG_CONTROLS_V4`                   | `0x1B04` | :heavy_plus_sign:  | `get_keys()`, _feature_reprogrammable_keys()
 `REPORT_HID_USAGE`                     | `0x1BC0` | :x:                |
 `PERSISTENT_REMAPPABLE_ACTION`         | `0x1C00` | :x:                |
 `WIRELESS_DEVICE_STATUS`               | `0x1D4B` | :x:                | status reporting from device
@@ -72,12 +72,12 @@ Feature                                | ID       | Status             | Notes
 `ENCRYPTION`                           | `0x4100` | :x:                |
 `LOCK_KEY_STATE`                       | `0x4220` | :x:                |
 `SOLAR_DASHBOARD`                      | `0x4301` | :x:                |
-`KEYBOARD_LAYOUT`                      | `0x4520` | :x:                |
+`KEYBOARD_LAYOUT`                      | `0x4520` | :x:                | read only
 `KEYBOARD_DISABLE`                     | `0x4521` | :x:                |
 `KEYBOARD_DISABLE_BY_USAGE`            | `0x4522` | :x:                |
 `DUALPLATFORM`                         | `0x4530` | :x:                |
 `MULTIPLATFORM`                        | `0x4531` | :x:                |
-`KEYBOARD_LAYOUT_2`                    | `0x4540` | :x:                |
+`KEYBOARD_LAYOUT_2`                    | `0x4540` | :x:                | read only
 `CROWN`                                | `0x4600` | :x:                |
 `TOUCHPAD_FW_ITEMS`                    | `0x6010` | :x:                |
 `TOUCHPAD_SW_ITEMS`                    | `0x6011` | :x:                |
diff --git a/lib/logitech_receiver/special_keys.py b/lib/logitech_receiver/special_keys.py
index 6eeba26c..59917b82 100644
--- a/lib/logitech_receiver/special_keys.py
+++ b/lib/logitech_receiver/special_keys.py
@@ -191,13 +191,15 @@ CONTROL = _NamedInts(
 	ZOOMOUT=0x00AB,
 	BACK_HSCROLL=0x00AC,
 	SHOW_DESKTOP_HPP=0x00AE,
+	Fn_Left_Click=0x00B7,		# from K400 Plus
+	Yellow_Left_Click_Key=0x00B8,	# from K400 Plus
     	Screen_Capture=0x00BF,		# from Craft Keyboard
 	Thumb_Button=0x00C3,		# from MX Master
     	Top_Button=0x00C4,		# from MX Master
 	Brightness_Down=0x00C7,		# from Craft Keyboard
 	Brightness_Up=0x00C8,		# from Craft Keyboard
-	Mission_Control=0x00E0,		# from Craft Keyboard
-	Launchpad=0x00E1,		# from Craft Keyboard
+	Switch_Workspaces=0x00E0,	# from Craft Keyboard
+	Application_Launcher=0x00E1,	# from Craft Keyboard
 	Backlight_Down=0x00E2,		# from Craft Keyboard
 	Backlight_Up=0x00E3,		# from Craft Keyboard
 	Previous_Fn=0x00E4,		# from Craft Keyboard
@@ -206,7 +208,7 @@ CONTROL = _NamedInts(
 	Mute_Fn=0x00E7,			# from Craft Keyboard
 	Volume_Down_Fn=0x00E8,		# from Craft Keyboard
 	Volume_Up_Fn=0x00E9,		# from Craft Keyboard
-	Look_Up=0x00EA,			# from Craft Keyboard
+	Context_Menu=0x00EA,			# from Craft Keyboard
 )
 CONTROL._fallback = lambda x: 'unknown:%04X' % x
 
@@ -350,14 +352,15 @@ TASK = _NamedInts(
 	Win8ShowDesktopWin7Back=0x008E, # also known as ShowDesktop
 	MetroApplicationSwitch=0x0090, # also known as MetroStartScreen
 	ShowUI=0x0092,
-	Switch_Screen=0x0093,		# from K400
-	Maximize_Window=0x0095,		# from K400
+	Switch_Screen=0x0093,		# from K400 Plus
+	Maximize_Window=0x0095,		# from K400 Plus
+	Screen_Capture=0x009B,		# from Craft Keyboard
 	Toggle_Free_Spin=0x009D,	# from MX Master
 	Mouse_Thumb_Button=0x00A9,	# from MX Master
 	Brightness_Down=0x00A3,		# from Craft Keyboard
 	Brightness_Up=0x00A4,		# from Craft Keyboard
 	Switch_Workspace=0x00BF,	# from Craft Keyboard
-	Launchpad=0x00C0,		# from Craft Keyboard
+	Application_Launcher=0x00C0,	# from Craft Keyboard
 	Backlight_Down=0x00C1,		# from Craft Keyboard
 	Backlight_Up=0x00C2,		# from Craft Keyboard
 	Context_Menu=0x00C3,		# from Craft Keyboard