You cannot add "G.Skill Trident Z5 RGB DDR5 6400MHz Desktop Memory, 32GB (2x16GB) Capacity, 6400MHz Tested Speed, CL32-39-39-102 Latency, 1.40 Voltage, Unbuffered, Non-ECC, Intel XMP 3.0 | F5-6400J3239G16GX2-TZ5RS" to the cart because the product is out of stock.