Brake Booster Pump Assembly with Accumulator

I own a 2004 Toyota Tundra SR5 double cab 4x4 with stability control. I noticed it doesn't have the large round brake booster. Instead, it has a brake booster pump assembly with accumulator. Can anyone advise how this works. I noticed my brake fluid was low after changing my brake fluid and bleeding all the brakes. Some website indicated fluid could be leaking into the booster. When I went to check the booster I noticed the afore mentioned set up. Thanks.

 

This style?
https://www.tundras.com/threads/im-at-my-wits-end-master-cylinder-issues.39933/

 

Or is this style, and you potentially have a VSC/trac control/AutoLSD button inside the dash?
https://www.tundras.com/threads/thunking-in-reverse.127903/#post-3266932

 

I think I misread OPs post, he says with stability control. It's most likely the one you posted then.

 

If that's the case, I know very little about the setup, so I would encourage @Sierracoco to click HERE, then click the 'download' button to grab the FSM for his truck, and get reading.

I know little to nothing about that setup and how to manage, but that '05-'06 FSM will probably help. I'm linking that because I don't think I've ever seen that VSC/AutoLSD setup in an access cab, and the 05-06 FSM has more info on double cabs.

I want to say this is something I've seen @BubbaW give advice on in the past, but I dunno if he gets my tags these days. He was on here as recent as yesterday.

 

Thanks shifty that's the one in my truck. I wish it wasn't since it seems more complicated. I appreciate the link.