NeXT NeXTstation Turbo Color Computer from 1992 running NEXTSTEP 3.3

The slot you said you "don't know what it's for" is the DSP RAM slot. It's very rarely, if ever, used. It was impossible to find even when NeXT were being sold. Full disclosure: I am the GNUstep maintainer and a former developer on NeXT machines as well as a current Cocoa/Mac/iOS Developer.

It's kinda cool how this looks alot newer than it really is

Absolutely mind blowing to see that Next was so similar to apple's earlier powerpc computers, especially crazy to see that OSX is basically NEXT and classic Mac OS made a shiny baby.

Ah, the time where you could sip your tea between every click, waiting for a window to pop up.

I absolutely love videos about old hardware.

Miller columns, a navigation concept found in both NeXTSTEP and macOS, is one thing I really like as a standard way of browsing directories and files; it even found its way to the iPods, navigating music libraries, albums and songs in columns from left to right. I’d really like to have a good implementation of Miller columns on Linux, but I don’t want to be that guy who develops yet another obscure file manager. :-) Thank you for this great blast from the past, Cameron!

Really appreciate that you made this video, I always wanted to know about these things in detail

Thank you for this. I've always found those old NeXT systems fascinating.

Oh my goodness, I yearned for one of these when I read about them being released in PC World years ago. I am so envious you have one now!

I remember seeing (and playing with) a NeXT cube for the first time at my university in '94 or '95. Even then – with Windows 95 just around the corner – I was convinced I was dealing with something from the future. When Jobs returned at Apple a few years later, I tried to convince my dad to invest a few thousand (we weren't particularly rich) in Apple stock. He thought I was crazy (but he did get me a decent Mac). We all know who turned out right after the fact (and we're still not particularly rich). Later people started doubting Steve Jobs' vision and everything – with the iPod being a relatively silly device. I'm convinced most of those pundits had never seen let alone used a NeXT machine in the nineties.

I had a Next Color Turbo for several years..I bought most of the parts from a guy in Colorado, loved it..

Thanks for the video, always been curious about Nextstep.

You might be interested to know the DSP is the same chip used in the Atari Falcon from the same Era. The DSP in the falcon was used heavily for sound and graphics processing, for instance it could decode MP3 in real time which PCs could not do back then. Search for some Atari Falcon demos to see the power of the DSP in action.

I still have a complete NeXT Station sitting in storage somewhere, maybe I should get it back up and running...

I am IN LOVE with the design of the NeXTstation. I'm looking at a bundle with a NeXTstation, keyboard and mouse, then I'm looking at a NeXTstation Turbo Color, and leave the original for a sleeper project.

Excellent. I so lusted after one of those machines in the day. Thanks.

On Mac OS X before Mojave, the Screenshot application still used the NeXTSTEP icon in its window.

+Cameron Gray Don't know if this has been mentioned elsewhere in the comments[TL;DR], but the slot at time index 14:24 is for level 2 cache. It was available in 256KB, 512KB and 1MB capacities. Even the 256KB module improved system performance to serious degree. Bootups took A LOT less time. It was an amazing difference.

Do you have any plans to digitize and upload the manuals? What about images of the bootfloppies and CDs?

Great documentary video. Thanks.