The B660 Pro RS offers a robust VRM solution, two Hyper M.2 PCIe 4.0 NVMe SSD slots and a stronger Steel Slot PCIe 4.0 16x that builds in extra anchor points and ensures signal stability for heavier graphics cards. Premium Nahimic Audio and Intel LAN round-up a strong set of core features, while Polychrome RGB with ARGB sync ensures PC builders can express their style.