diff --git a/hardware/arduino/avr/boards.txt b/hardware/arduino/avr/boards.txt
index 2181292c3..6c4e5174e 100644
--- a/hardware/arduino/avr/boards.txt
+++ b/hardware/arduino/avr/boards.txt
@@ -156,58 +156,84 @@ nano.menu.cpu.atmega168.build.mcu=atmega168
 
 ##############################################################
 
-mega2560.name=Arduino Mega 2560 or Mega ADK
-mega2560.vid.0=0x2341
-mega2560.pid.0=0x0044
-mega2560.vid.1=0x2341
-mega2560.pid.1=0x003f
-mega2560.cpu=2560 or ADK
-
-mega2560.upload.tool=avrdude
-mega2560.upload.protocol=wiring
-mega2560.upload.maximum_size=258048
-mega2560.upload.maximum_data_size=8192
-mega2560.upload.speed=115200
-
-mega2560.bootloader.tool=avrdude
-mega2560.bootloader.low_fuses=0xFF
-mega2560.bootloader.high_fuses=0xD8
-mega2560.bootloader.extended_fuses=0xFD
-mega2560.bootloader.file=stk500v2/stk500boot_v2_mega2560.hex
-mega2560.bootloader.unlock_bits=0x3F
-mega2560.bootloader.lock_bits=0x0F
-
-mega2560.build.mcu=atmega2560
-mega2560.build.f_cpu=16000000L
-mega2560.build.board=AVR_MEGA2560
-mega2560.build.core=arduino
-mega2560.build.variant=mega
-
-##############################################################
-
-mega.name=Arduino Mega (ATmega1280)
-mega.cpu=ATmega1280
+mega.name=Arduino Mega
 
 mega.upload.tool=avrdude
-mega.upload.protocol=arduino
-mega.upload.maximum_size=126976
 mega.upload.maximum_data_size=8192
-mega.upload.speed=57600
 
 mega.bootloader.tool=avrdude
 mega.bootloader.low_fuses=0xFF
-mega.bootloader.high_fuses=0xDA
-mega.bootloader.extended_fuses=0xF5
-mega.bootloader.file=atmega/ATmegaBOOT_168_atmega1280.hex
 mega.bootloader.unlock_bits=0x3F
 mega.bootloader.lock_bits=0x0F
 
-mega.build.mcu=atmega1280
 mega.build.f_cpu=16000000L
-mega.build.board=AVR_MEGA
 mega.build.core=arduino
 mega.build.variant=mega
 
+## Arduino Mega w/ ATmega2560
+## -------------------------
+mega.menu.cpu.atmega2560=ATmega2560 (Mega 2560)
+
+mega.menu.cpu.atmega2560.vid.0=0x2341
+mega.menu.cpu.atmega2560.pid.0=0x0010
+mega.menu.cpu.atmega2560.vid.1=0x2341
+mega.menu.cpu.atmega2560.pid.1=0x0042
+
+mega.menu.cpu.atmega2560.upload.protocol=wiring
+mega.menu.cpu.atmega2560.upload.maximum_size=258048
+mega.menu.cpu.atmega2560.upload.speed=115200
+
+mega.menu.cpu.atmega2560.bootloader.high_fuses=0xD8
+mega.menu.cpu.atmega2560.bootloader.extended_fuses=0xFD
+mega.menu.cpu.atmega2560.bootloader.file=stk500v2/stk500boot_v2_mega2560.hex
+
+mega.menu.cpu.atmega2560.build.mcu=atmega2560
+mega.menu.cpu.atmega2560.build.board=AVR_MEGA2560
+
+## Arduino Mega w/ ATmega1280
+## -------------------------
+mega.menu.cpu.atmega1280=ATmega1280
+
+mega.menu.cpu.atmega1280.upload.protocol=arduino
+mega.menu.cpu.atmega1280.upload.maximum_size=126976
+mega.menu.cpu.atmega1280.upload.speed=57600
+
+mega.menu.cpu.atmega1280.bootloader.high_fuses=0xDA
+mega.menu.cpu.atmega1280.bootloader.extended_fuses=0xF5
+mega.menu.cpu.atmega1280.bootloader.file=atmega/ATmegaBOOT_168_atmega1280.hex
+
+mega.menu.cpu.atmega1280.build.mcu=atmega1280
+mega.menu.cpu.atmega1280.build.board=AVR_MEGA
+
+##############################################################
+
+megaADK.name=Arduino Mega ADK
+
+megaADK.vid.0=0x2341
+megaADK.pid.0=0x003f
+megaADK.vid.1=0x2341
+megaADK.pid.1=0x0044
+
+megaADK.upload.tool=avrdude
+megaADK.upload.protocol=wiring
+megaADK.upload.maximum_size=258048
+megaADK.upload.maximum_data_size=8192
+megaADK.upload.speed=115200
+
+megaADK.bootloader.tool=avrdude
+megaADK.bootloader.low_fuses=0xFF
+megaADK.bootloader.high_fuses=0xD8
+megaADK.bootloader.extended_fuses=0xFD
+megaADK.bootloader.file=stk500v2/stk500boot_v2_mega2560.hex
+megaADK.bootloader.unlock_bits=0x3F
+megaADK.bootloader.lock_bits=0x0F
+
+megaADK.build.mcu=atmega2560
+megaADK.build.f_cpu=16000000L
+megaADK.build.board=AVR_ADK
+megaADK.build.core=arduino
+megaADK.build.variant=mega
+
 ##############################################################
 
 leonardo.name=Arduino Leonardo
diff --git a/libraries/USBHost/extras/README b/libraries/USBHost/extras/README
deleted file mode 100644
index 51a0d145d..000000000
--- a/libraries/USBHost/extras/README
+++ /dev/null
@@ -1,7 +0,0 @@
-This is the most reliable library to control the USB host chip MAX3421E. It is used to handle the communication between the Arduino ADK board and Android devices supporting Accessory mode. It of course works with other devices, but documenting that is outside our scope. 
-
-It is of course based in the original by CircuitsAtHome.com and has been patched by Follower (RancidBacon.com)
-
-CircuitsAtHome has discontinued the development of this project. The Arduino Team commissioned a patch to the library to make it reliable up to a 99%. 
-CircuitsAtHome revision of the code can be found at https://github.com/felis/USB_Host_Shield_2.0. However the Arduino Team does not recommend using that library, yet, with ADK compatible boards, as v1 is much more stable.
-