Control: HRA Lab Machine Puzzle Guide

In this guide we will show you how to solve the HRA Lab puzzle in Control.

While playing through the story mission in Control, you eventually come to the HRA Research Lab. Here, you need to solve a puzzle using terminals and punch cards. Each numbered terminal requires a specific punch card to get the HRA machine to work.

There are five terminals and five punch cards. Four of the terminals and punch cards are found downstairs, while the fifth is upstairs. The upstairs terminal is terminal number four in the sequence. The punch cards need to go in the terminals in the correct order, so grab the first three downstairs, head upstairs to get number four, then come back downstairs to get the fifth. Each terminal has its number written on the side, so they are easy to tell apart.

Control: HRA Lab Machine Puzzle Guide

Terminal 1

Terminal 2

Terminal 3

Terminal 4

You can tell the fourth terminal apart by the red rectangle below.

By now, you will have only one card remaining, so head back downstairs and place this in the fifth terminal, then start the machine to continue the story.

And there you go, the solution for the HRA Research Lab puzzle, you can now continue with the rest of this mind-bending story.