This product is either discontinued or we cannot get that from suppliers.
Gigabyte Gaming Memory GP-AR36C18S8K2HU416R, 16GB kit (2x8GB), Dual Channel Kit, Speed 2666MHz, 1.2V, Speed Rating PC4 28800 (3600MHz), Compatibility Please refer to Aorus support website for QVL details.
The Gigabyte Aorus RGB 16GB (2x8GB) DDR4 memory kit features 3600 MHz frequency, 18-19-19-39 (XMP 3600MHz) timings, high efficiency heat spreaders for better cooling performance.