Ok, thanks. I don’t want to name (and shame) them before they’ve had a chance to provide other options, and I’ve been happy with the support from them before. But I know it doesn’t help you help me. I’m pretty sure it is not integrated based on the way they describe it. I could try to open it later and see if I can identify it. A decade of Macbooks, and the prospects of opening a laptop seems scary somehow, even though I’m an engineer and have regularly opened up much more expensive equipment in my work… though not computer related.
My laptop came preinstalled with Linux :)