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The older Neptune and Croire were tasked by Kurome to find this console. They found it in the depths of the Planeptune Basilicom. The two bring it out to an alleyway where Neptune notices someone inside the console. The console then sucks the two inside.
Zero Dimension Neptunia Z: Twilight of the Desperate CPU
The smaller Neptune then found the console and brought it back to the Planeptune Basilicom. She shows it off to her sister and they turn it on which causes the console to create a portal sucking the two into the Zero Dimension.
Hyper Dimension Neptunia G: The Golden Leaders, Reconstructors of Gamindustri
Kurome rewrites the world and tasks AffimaX to get the console and its components. Once it has all be acquired, Affimojas demands a large sum from Arfoire and older Neptune. The two just steal parts of it and retreat.