diff --git a/ATU_100_EXT_board/ATU-100_Extended_Board_User_Manual_eng.pdf b/ATU_100_EXT_board/ATU-100_Extended_Board_User_Manual_eng.pdf
deleted file mode 100644
index 6c119fa..0000000
Binary files a/ATU_100_EXT_board/ATU-100_Extended_Board_User_Manual_eng.pdf and /dev/null differ