Navigating the frozen depths of Planet 4546B in Subnautica Below Zero requires advanced technology to unlock the planet's deepest mysteries and progress through the core narrative. One of the most critical mid-game items you will need to construct is the Parallel Processing Unit, which serves as a vital component for disabling the Alterra communications tower. Finding the blueprints for this item requires exploring dangerous sunken wreckage scattered across the ocean floor.
Locating the Mercury II Wreckage Fragments
To acquire the blueprint for the Parallel Processing Unit, players must scan three distinct fragments hidden inside the remnants of the Mercury II spaceship. This massive crashed vessel is split into three main segments located within the Purple Vents and Lilypad Islands biomes. Navigating the tight corridors of these shipwrecks demands caution and a sufficient supply of oxygen.
The bow section and the stern section contain multiple areas where these small, electronic blocks can be found affixed to internal console walls. You will need a Laser Cutter to slice through sealed doors and access the hidden compartments housing these components. Ensuring your SeaTruck is parked nearby will provide a quick retreat when your air supply begins to run low.
Required Materials for Crafting
Once you successfully scan all three fragments, the blueprint will automatically unlock in your PDA manufacturing menu. Crafting a single unit requires a combination of rare minerals and manufactured electrical components. Players must gather one Gold, one Silver Ore, and one Table Coral Sample to complete the recipe.
Gold and silver can be easily found by harvesting limestone and calaverite outcrops in the deeper biomes surrounding the starting area. Table coral grows abundantly on the cliff sides of the Twisty Bridges region and must be cut with a survival knife. Bringing these resources back to your Fabricator will allow you to assemble the item instantly.
Utilizing the Unit for Story Progression
The primary purpose of the Parallel Processing Unit is its inclusion in the recipe for the Test Override Module. This specialized tool is absolutely necessary to disable the tracking satellite located at the peak of Delta Island. Successfully shutting down the tower allows players to advance their relationship with Marguerit Maida and uncover the truth behind Alterra's operations.
As you prepare to explore these deep underwater hazards, tracking your achievements and sharing your gameplay discoveries through your gaming profile can enhance your journey. Combining thorough exploration of the wreckage with efficient resource gathering ensures a smooth progression through the alien waters. Armed with the proper equipment, conquering the challenges of this frozen aquatic world becomes a rewarding experience.
