When using two Lian Li Strimer L-Connect 3 controllers, the L-Connect 3 software can control both controllers, but with some restrictions.

- The L-Connect 3 software makes it possible to control multiple Strimer Plus and Strimer Plus V2 devices, but there are limitations when synchronising RGB effects between different Lian Li devices. The software allows for extensive settings and control of the lighting effects, but the synchronisation of all RGB components in the system can only be done via the RGB signals of the motherboard.

- It is possible to control multiple Strimer Plus and Strimer Plus V2 via the L-Connect 3 software, but the software must be running to recall the stored animation patterns. However, there are workarounds, such as disabling deep sleep or activating permanently powered USB ports, to allow the controller to retain its last setting when the PC is switched off.

Overall, the L-Connect 3 software can control both controllers, but it is important to consider the specific limitations and requirements.