The Lenovo L15 mobile monitor is compatible with the Lenovo IdeaPad 1 15ALC7 laptop. Here are the key points to consider for compatibility:

- Connectivity: The L15 monitor has two USB-C ports that support data, power, audio, and video transfer, including DisplayPort 1.2 Alt Mode. This allows you to connect the monitor to your laptop using a USB-C cable.
- Power Delivery: The USB-C ports on the L15 monitor also support power pass-through up to 65W, which can charge your laptop simultaneously while it is connected.
- Display Compatibility: The monitor's Full HD resolution (1920x1080) and IPS panel technology ensure it can display content from your laptop without any issues related to the display itself.

If you are having trouble configuring them together, ensure that you are using the correct USB-C cable and that the laptop's USB-C port supports DisplayPort Alt Mode and power delivery. Also, check the settings on both devices to ensure they are set to recognize and use the external display correctly.