D3: Help with a level

[BuudWeizErr]

I believe this is the 1st or 2nd level after getting out of hell and back to Mars. I think it's CPU Labs, but I forgot to make a mental note of it when I tried to figure it out today. Here are a couple screens:

If you jump into the computer station, the door is locked, there is another door that I guess needs a chip to get into it, and the third door requires a code, and I can't figure out where the code is.

tia.

 

[ThisMonsterLives]

I think you missed a hidden little door that opens and you get a PDA. It's in the room after you cross those steps.

 

[BuudWeizErr]

yup, you're right, I missed a switch on one of the computers in the room in the third pic. I got the code to the door off the security screen, but I still hadn't gotten his PDA.

But I got them now, thanks.