diff --git a/ion/Makefile b/ion/Makefile
index a11229099..363201c5f 100644
--- a/ion/Makefile
+++ b/ion/Makefile
@@ -6,6 +6,11 @@ endif
 
 SFLAGS += -Iion/include -DKD_CONFIG_H=1
 
+ifndef ION_KEYBOARD_LAYOUT
+  $(error platform.mak should define ION_KEYBOARD_LAYOUT)
+endif
+SFLAGS += -Iion/include/ion/keyboard/$(ION_KEYBOARD_LAYOUT)
+
 include ion/src/$(PLATFORM)/Makefile
 include ion/src/shared/tools/Makefile
 
diff --git a/ion/include/ion/keyboard.h b/ion/include/ion/keyboard.h
index 8e1d1cf74..3db6045c9 100644
--- a/ion/include/ion/keyboard.h
+++ b/ion/include/ion/keyboard.h
@@ -6,29 +6,11 @@ extern "C" {
 #include <assert.h>
 }
 
+#include <keyboard_layout.h>
+
 namespace Ion {
 namespace Keyboard {
 
-enum class Key : uint8_t {
-  A1=0,  A2=1,  A3=2,  A4=3,  A5=4,  A6=5,
-  B1=6,  B2=7,  B3=8,  /*B4=9,  B5=10, B6=11, */
-  C1=12, C2=13, C3=14, C4=15, C5=16, C6=17,
-  D1=18, D2=19, D3=20, D4=21, D5=22, D6=23,
-  E1=24, E2=25, E3=26, E4=27, E5=28, E6=29,
-  F1=30, F2=31, F3=32, F4=33, F5=34, // F6=35,
-  G1=36, G2=37, G3=38, G4=39, G5=40, // G6=41,
-  H1=42, H2=43, H3=44, H4=45, H5=46, // H6=47,
-  I1=48, I2=49, I3=50, I4=51, I5=52, // I6=53,
-  None = 54
-};
-
-#define MODEL_N0101 1
-#ifdef MODEL_N0101
-constexpr Key PowerKey = Key::B3;
-#else
-constexpr Key PowerKey = Key::B2;
-#endif
-
 constexpr Key ValidKeys[] = {
   Key::A1, Key::A2, Key::A3, Key::A4, Key::A5, Key::A6, Key::B1, PowerKey,
   Key::C1, Key::C2, Key::C3, Key::C4, Key::C5, Key::C6, Key::D1, Key::D2,
diff --git a/ion/include/ion/keyboard/layout_B2/keyboard_layout.h b/ion/include/ion/keyboard/layout_B2/keyboard_layout.h
new file mode 100644
index 000000000..42dc1e66d
--- /dev/null
+++ b/ion/include/ion/keyboard/layout_B2/keyboard_layout.h
@@ -0,0 +1,25 @@
+#ifndef ION_KEYBOARD_LAYOUT_B2_H
+#define ION_KEYBOARD_LAYOUT_B2_H
+
+namespace Ion {
+namespace Keyboard {
+
+enum class Key : uint8_t {
+  A1=0,  A2=1,  A3=2,  A4=3,  A5=4,  A6=5,
+  B1=6,  B2=7,  /*B3=8, B4=9,  B5=10, B6=11, */
+  C1=12, C2=13, C3=14, C4=15, C5=16, C6=17,
+  D1=18, D2=19, D3=20, D4=21, D5=22, D6=23,
+  E1=24, E2=25, E3=26, E4=27, E5=28, E6=29,
+  F1=30, F2=31, F3=32, F4=33, F5=34, // F6=35,
+  G1=36, G2=37, G3=38, G4=39, G5=40, // G6=41,
+  H1=42, H2=43, H3=44, H4=45, H5=46, // H6=47,
+  I1=48, I2=49, I3=50, I4=51, I5=52, // I6=53,
+  None = 54
+};
+
+constexpr Key PowerKey = Key::B2;
+
+}
+}
+
+#endif
diff --git a/ion/include/ion/keyboard/layout_B3/keyboard_layout.h b/ion/include/ion/keyboard/layout_B3/keyboard_layout.h
new file mode 100644
index 000000000..f519e35cd
--- /dev/null
+++ b/ion/include/ion/keyboard/layout_B3/keyboard_layout.h
@@ -0,0 +1,25 @@
+#ifndef ION_KEYBOARD_LAYOUT_B3_H
+#define ION_KEYBOARD_LAYOUT_B3_H
+
+namespace Ion {
+namespace Keyboard {
+
+enum class Key : uint8_t {
+  A1=0,  A2=1,  A3=2,  A4=3,  A5=4,  A6=5,
+  B1=6,  /*B2=7,*/  B3=8,  /*B4=9,  B5=10, B6=11, */
+  C1=12, C2=13, C3=14, C4=15, C5=16, C6=17,
+  D1=18, D2=19, D3=20, D4=21, D5=22, D6=23,
+  E1=24, E2=25, E3=26, E4=27, E5=28, E6=29,
+  F1=30, F2=31, F3=32, F4=33, F5=34, // F6=35,
+  G1=36, G2=37, G3=38, G4=39, G5=40, // G6=41,
+  H1=42, H2=43, H3=44, H4=45, H5=46, // H6=47,
+  I1=48, I2=49, I3=50, I4=51, I5=52, // I6=53,
+  None = 54
+};
+
+constexpr Key PowerKey = Key::B3;
+
+}
+}
+
+#endif
diff --git a/scripts/platform.blackbox.mak b/scripts/platform.blackbox.mak
index b12759f2b..d678f9501 100644
--- a/scripts/platform.blackbox.mak
+++ b/scripts/platform.blackbox.mak
@@ -1,5 +1,6 @@
 TOOLCHAIN ?= host-gcc
 USE_LIBA ?= 0
+ION_KEYBOARD_LAYOUT = layout_B2
 EXE = bin
 EPSILON_ONBOARDING_APP = 0
 
diff --git a/scripts/platform.device.n0100.mak b/scripts/platform.device.n0100.mak
index 9c36368ed..8f41cc583 100644
--- a/scripts/platform.device.n0100.mak
+++ b/scripts/platform.device.n0100.mak
@@ -1 +1,2 @@
 TOOLCHAIN ?= arm-gcc-m4f
+ION_KEYBOARD_LAYOUT = layout_B2
diff --git a/scripts/platform.device.n0101.mak b/scripts/platform.device.n0101.mak
index b9b31d0f1..8767597e6 100644
--- a/scripts/platform.device.n0101.mak
+++ b/scripts/platform.device.n0101.mak
@@ -1 +1,2 @@
 TOOLCHAIN ?= arm-gcc-m7f
+ION_KEYBOARD_LAYOUT = layout_B3
diff --git a/scripts/platform.emscripten.mak b/scripts/platform.emscripten.mak
index dcbb6bff5..a19578a05 100644
--- a/scripts/platform.emscripten.mak
+++ b/scripts/platform.emscripten.mak
@@ -1,5 +1,6 @@
 TOOLCHAIN = emscripten
 USE_LIBA = 0
+ION_KEYBOARD_LAYOUT = layout_B2
 EXE = js
 EPSILON_ONBOARDING_APP = 0
 EPSILON_GETOPT = 1
diff --git a/scripts/platform.sdl.mak b/scripts/platform.sdl.mak
index 43e80e04e..0624babe6 100644
--- a/scripts/platform.sdl.mak
+++ b/scripts/platform.sdl.mak
@@ -1,4 +1,5 @@
 USE_LIBA = 0
+ION_KEYBOARD_LAYOUT = layout_B2
 EPSILON_ONBOARDING_APP = 0
 EPSILON_GETOPT = 1
 
diff --git a/scripts/platform.simulator.mak b/scripts/platform.simulator.mak
index fc42f9a21..4bc3f4186 100644
--- a/scripts/platform.simulator.mak
+++ b/scripts/platform.simulator.mak
@@ -3,6 +3,7 @@ ifeq ($(OS),Windows_NT)
   TOOLCHAIN = mingw
 endif
 USE_LIBA = 0
+ION_KEYBOARD_LAYOUT = layout_B2
 EXE = elf
 EPSILON_ONBOARDING_APP = 0
 SFLAGS += -fPIE