Cocopar Y156FH7S

Name: Cocopar Y156FH7S
Brand: Cocopar

This is what matters about Cocopar Y156FH7S.

About

A budget dual-USB-C portable monitor with a critical asymmetry in its PCB layout — only the left-side USB-C port is actually wired to the video scaler, the right one is power-only despite looking identical.

DP Alt Mode: Yes
Max resolution: 1920x1080
Requires DisplayLink driver: No

Ports: 2× USB-C and 1× Mini HDMI

Confirmed with

Notebook (generic)
The two USB-C ports are not functionally symmetric despite appearing identical: only the left-side port carries DP Alt Mode video data to the internal scaler, while the right port is wired purely as a power sink with no video path at all.