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Level 2 Data Store - To choose a class you need to do the Crawling Corruption mission
Energy Spike in Databank (Alpha) & Failed Cyborg Unit drops the Hertz Matrix click on it and try to extract the Surge Vector
Energy Spike in Databank (Alpha) drops the Hertz Matrix click on it and try to extract the Pulse Line or the Corrupted System Monitor in Databank (Beta) drops the Energy Cords click on it and try to extract the Pulse Line
Pulse Generator is a reward from the Facility Assault Mission, Item is Bound (Non-Tradable) you can't get this item other than doing the Mission