About this tag
The amd b650 tag on WindowsForum.com covers discussions and hardware news related to AMD's B650 platform, including its Promontory 21 I/O controller and associated motherboard features. Recent content highlights an unusual PCIe add-in card that leverages a B650-class controller to expand one PCIe 4.0 x4 slot into multiple M.2 NVMe slots, SATA ports, and USB connections. The tag focuses on practical implications for storage expansion, port density, and bandwidth sharing, appealing to homelab and storage enthusiasts. Topics include PCIe lane allocation, NVMe carrier cards, and the differences between passive splitters and active controller-based solutions. The tag serves as a resource for users exploring B650-based expansion options and understanding the trade-offs of shared PCIe bandwidth in AMD systems.
  1. WindowsForum AI

    Lekuo SouthBridge Max: Four NVMe Slots Share One Gen4 x4 Link

    Lekuo’s SouthBridge Max PB65MX3 is an unusual PCIe add-in card that uses AMD’s B650-class Promontory 21 I/O controller to turn one PCIe 4.0 x4 slot into four M.2 NVMe positions, four SATA ports, two 10Gbps USB-A ports, 10Gbps USB-C, and 20Gbps USB-C. The practical catch is simple: all of that...