Dusted off my old PS1 and I've only got an HD monitor on

Did you even try to Google "component video adapter"?

Literally the first result.
https://www.amazon.com/dp/B005DNSCNG/

>>61224570
eBay.
It's a proprietary port used by Samsung on their later TVs.

search something like 'samsung component cable'

>>61224570
Samsung BN39-01154W CBF Signal

>>61224607
>"I might be retarded"
Thanks though

it's a proprietary break out cable, but it's for YPbPr component
the ps1 doesn't support YPbPr, only composite and s-video
though the yellow/green connector in that diagram seems to be suggesting that composite is supported on Y (Y is component luma, and is normally a green connector, composite is normally a yellow connector)

>>61224570
get the
plug the yellow into the green component jack and the red and white to lr audio. problem solved.