“The Thinker,” the Rapture Central Computing mainframe, is Porter’s life work. He needs you to print out the mainframe’s machine code so that he can return to the surface with it. You need to go through Operations to get to the Computer Core Access. Take the access punchcard from the secret compartment under his desk to unlock the Operations wing.
C.M. Porter’s Office
Take a moment to hack the Health Station near the door and the Safe in the back right corner to gain two Auto-Hack Darts, three EVE Hypos, and the Walking Inferno tonic. Keep in mind that there aren’t any Bot Shutdown panels nearby—if you trigger the alarm, hide behind the desk and let the office defenses and your Security Bots handle the situation. There’s also an Audio Diary (“Nothing But Ashes”) on the desk near the photos of Porter’s family. Once ready, open the “eye-catching panel” under the wooden desk. There you’ll find the Operations Access Punchcard, 100 Laser Cell ammo, and 80 Dollars.
Reed Wahl sends one of his goons to attack you inside the office, a Fiery Brute Splicer. Fiery Brute Splicers are immune to fire damage, so resist the urge to heave a fuel barrel at it. Open fire with the Ion Laser and rely on your two Security Bots and the office defenses to do the heavy lifting.