This is a pre-order test link. If the number of people subscribing to out-of-stock notifications exceeds 100, we will officially open pre-orders.

The PROM21-All in is a flagship PCIe x4 expansion card powered directly by the AMD B650 (Promontory 21) desktop chipset. It delivers desktop-grade I/O bandwidth, massive storage capacity, and next-gen connectivity to any workstation or high-performance PC.

Key Features

Desktop Chipset Power: Built around the AMD B650 chipset for rock-solid stability and massive data throughput over a single PCIe x4 slot.

Switchable Oculink Port: Features a versatile Oculink interface that multiplexes PCIe and SATA signals. Easily switch between configurations via the onboard DIP switch (SW1) to support external GPUs or enterprise storage arrays.

Quad M.2 Storage Matrix: Equipped with 4x M.2 slots (2 on the front, 2 on the rear). Maximize your storage capacity with support for high-speed NVMe and SATA SSDs using the chipset's dedicated downstream lanes.

High-Speed USB Hub: Rear I/O includes a blisteringly fast 20Gbps USB-C port alongside four 10Gbps USB-A ports for zero-bottleneck peripheral connections.

Robust Power & Cooling: Features a dedicated external power connector (EXT_PWR) to ensure stable voltage under heavy loads, paired with a custom aluminum heatsink and a dedicated cooling fan header.

Technical Specifications