The Strimer Wireless 12V-2x6 GPU Cable Wide (RGB) from Lian Li is not specifically mentioned for compatibility with the ASUS TUF RTX 4090 OC in the information provided. However, it is important to note that Lian Li's Strimer cables are often compatible with different graphics cards as long as the correct connectors are used. To ensure that the cable can be connected to the GPU and to an existing GPU cable, you should check the connector types and compatibility with your specific model. If you need more information, I recommend contacting the official Lian Li website or customer service.