RCA?!
Did we fall back in time to the '80s?!
RCA is yet another formerly hallowed U.S. household brand relegated to being a licensed marketing tool for various foreign and domestic owned manufacturers/distributors of bargain priced, often substandard consumer goods manufactured in lowest cost countries.
Per Google AI
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The RCA RWBN12744-GRY is an All-in-One computer marketed under license by American Future Technology Corporation (AFT).
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The RCA brand name is a trademark owned by Talisman Brands, Inc. (operating as established.inc), which licenses the name to various third-party manufacturers for different product categories.
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For computers (including laptops, tablets, and all-in-one PCs), the RCA brand is licensed to American Future Technology Corporation.
The RCA RWBN12744-GRY all-in-one desktop computer uses the Windows 11 in S Mode operating system; designed for security and performance, primarily running apps from the Microsoft Store. You can switch out of S Mode to the full version of Windows 11 Home if desired, but it is not reversible.
With an entry-level Intel N100 quad-core processor and only 4GB RAM and a 128GB SSD, it meets the minimum requirements for Windows 11 compatibility, but is best suited for basic tasks like web browsing, video playback, email and other similar low processor demanding activities.
This is probably the biggest bottleneck on this computer, as W11 will use up the majority of that 4GB. Didn’t run across whether it’s upgradable or not either – not that such is cheap in present times. 
QVC infomercial for the RCA RWBN12744-GRY all-in-one desktop computer
Lots of sizzle for the stereotypical QVC viewer, but little steak for the educated consumer…
Nor did I. Until proven otherwise, I am working on the assumption that it is likely soldered RAM.