My Kona Rove ST (2020) frame has a single barrel adjuster integrated with the frame. It's at the front of the bike near the head tube located on the downtube on the left/non-drive side. I'm trying to figure out when or if I might ever use this component. When I bought my Kona Rove from my Local Bike Shop nothing was routed through the adjuster.
Kona's product photo also shows nothing routed through the adjuster and I'm failing to find any photos online where anyone uses this barrel adjuster.
When I look at the Park Tool video on "How to Size and Install Shift Cable Housing", the section regarding "segmented housing" illustrates a frame with "housing stops". In this scenario some of the shift cable is exposed, and shift cable housing near the headset stops at one housing stop, and there's another housing stop near the rear derailleur.
My frame has no housing stop near the rear derailleur unless I'm totally missing it.
Is my barrel adjuster for segmented shift cable routing? If so, shouldn't there be a matching barrel adjuster/housing stop at the rear end of the bike? Even if there was another housing stop at the rear I thought it seemed odd that the shift cable would need to run from the non-drive side to the drive-side. Although this bike was marketed as a 1x drivetrain maybe this component is here for the possibility of a front derailleur?