That Steam logo is the only outward sign that this is a Steam Machine and not an Alienware Alpha.
Valve is no longer highlighting Steam Machines hardware through the front page of its online Steam store, seemingly putting a final nail in the coffin of Valve's partnership with third-party PC builders.
While you can still access a Steam store page linking to four remaining Steam Machine partners through a direct link, Steam Machines no longer show up under the drop-down menu for "Hardware" on the main Steam store page. Promotional language and images for Steam Machines were also previously featured prominently on a hardware-focused landing page on the store (archived version), but that page now redirects to a simple search results page for the store's "hardware" category.
The marketing change seems to have happened around March 20, according to snapshots from The Internet Archive. Fan site Linux on Gaming was among the first to note the change publicly over a week later, though, perhaps highlighting just how little interest there has been in SteamOS-based hardware of late.

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