Disable "natural" scrolling on MacBook with High Sierra

I've just updated my 2010 MBP to High Sierra, and I'm struggling to turn off the natural scroll feature for the touchpad (I prefer the old fashioned way).

Whenever I look in system preferences, there appears to be nothing relevant when I search for it:

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If I try the Mouse or Trackpad sections, it just tells me that neither are connected: enter image description here

I've also looked under the 'Mouse & Trackpad' section under 'Accessibility' and tried 'Mouse Options', but still no option for it.

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Am I doing something wrong?


System Preferences > Trackpad > Scroll & Zoom enter image description here