First, identify the exact model of your ASUS motherboard — it is listed on the box, in the BIOS, or printed on the board itself between the PCIe slots.
Then check the technical specifications on the official ASUS website. There you will find:
the supported memory type (DDR4 or DDR5);
the maximum supported frequency (for example, 3200 MHz for DDR4 or 6000 MHz for DDR5);
the maximum capacity per slot;
support for dual-channel mode;
the list of tested memory modules (QVL).
It is best to choose RAM from the QVL list, as it guarantees compatibility. However, most modern memory modules will also work if they comply with JEDEC standards.
If your CPU belongs to an entry-level or mid-range series, very high memory frequencies may not be supported. For example, many Ryzen processors run stably with memory up to 3600 MHz, while 12th–13th generation Intel CPUs support higher frequencies.
It is also important to consider heatsinks and module height — on some motherboards, tall RAM modules may interfere with the CPU cooler.
Choosing a compatible memory kit ensures system stability, improves performance, and prevents boot issues.