Where is this Power To The People Weapon Upgrade?

[BioHack]

So I'm on the level where you have to find 4 plant samples.
THIS GUIDE says:

After the lights in the second area are on, it will be in the bottom of the holding cells area in a security office. The door has to be opened by hacking a panel through the broken window, on the left side.

I've beat everyone and now there's a key in the control panel, but before I complete the level, I want to find the aforementioned Power to the People station. I have searched the holding cells slowly and thoroughly and can't find a security office or broken window. WTF?!

[Adamada]

Spoiler: On the far south side of the Live Test Facility (see the game map) there is a corridor, you can see the Power to the People Station through one of the windows in this corridor.