-The following Items need to be installed (and enabled in the current Extension set) in the System Folder>Extensions folder for Logic Audio:-DigiSystem INIT 5.0.1 (or later)-Digidesign Direct I/O 5.1**How to configure Logic Audio (4.5 and later) with a Digi 001: -Launch Logic, open the Audio>Audio Hardware and Drivers window-Enable Direct I/O. -Quit and relaunch Logic-Open the Audio>Audio Hardware and Drivers window, click on the "Hardware Setup"button in the Direct I/O submenu, click Other Options and make sure "ADAT"is selected from the Optical format menu-Enable "Use 16 (or more) Ins & Outs from the Direct I/O submenu