Arduino Uno
Low Fuse = 0xFF
High Fuse = 0xDE
Extended Fuse = 0x05
Arduino Duemilanove or Nano w/ ATmega328
Low Fuse = 0xFF
High Fuse = 0xDA
Extended Fuse = 0x05
Arduino Diecimila, Duemilanove, or Nano w/ ATmega168
Low Fuse = 0xFF
High Fuse = 0xDD
Extended Fuse = 0x00
Arduino Mega 2560
Low Fuse = 0xFF
High Fuse = 0xD8
Extended Fuse = 0xFD
Arduino Mega (ATmega1280)
Low Fuse = 0xFF
High Fuse = 0xDA
Extended Fuse = 0xF5
Arduino Mini
Low Fuse = 0xFF
High Fuse = 0xDD
Extended Fuse = 0x00
Arduino Fio
Low Fuse = 0xFF
High Fuse = 0xDA
Extended Fuse = 0x05
Arduino BT w/ ATmega328
Low Fuse = 0xFF
High Fuse = 0xD8
Extended Fuse = 0x05
Arduino BT w/ ATmega168
Low Fuse = 0xFF
High Fuse = 0xDD
Extended Fuse = 0x00
LilyPad Arduino w/ ATmega328
Low Fuse = 0xFF
High Fuse = 0xDA
Extended Fuse = 0x05
LilyPad Arduino w/ ATmega168
Low Fuse = 0xE2
High Fuse = 0xDD
Extended Fuse = 0x00
Arduino Pro or Pro Mini (5V, 16 MHz) w/ ATmega328
Low Fuse = 0xFF
High Fuse = 0xDA
Extended Fuse = 0x05
Arduino Pro or Pro Mini (5V, 16 MHz) w/ ATmega168
Low Fuse = 0xFF
High Fuse = 0xDD
Extended Fuse = 0x00
Arduino Pro or Pro Mini (3.3V, 8 MHz) w/ ATmega328
Low Fuse = 0xFF
High Fuse = 0xDA
Extended Fuse = 0x05
Arduino Pro or Pro Mini (3.3V, 8 MHz) w/ ATmega168
Low Fuse = 0xC6
High Fuse = 0xDD
Extended Fuse = 0x00
Arduino NG or older w/ ATmega168
Low Fuse = 0xFF
High Fuse = 0xDD
Extended Fuse = 0x00