WisdPi PROM21 All in Expansion Card
Transform any PC with the WisdPi PROM21 All in Expansion Card. Powered by AMD B650, it delivers 4x M.2 SSD slots, switchable OCuLink (PCIe or 4x SATA), 20Gbps USB-C, and 10Gbps USB-A ports. Ideal for NAS, homelab, and compact workstations. Compatible with AMD, Intel, Mac Silicon & Raspberry Pi 5.
Features:
The WisdPi PROM21 All in Expansion Card is a flagship PCIe x4 add-in card powered directly by the AMD B650 (Promontory 21) desktop chipset. It transforms any standard PCIe slot into a desktop-grade I/O hub, delivering massive storage capacity and next-gen connectivity to workstations, homelabs, and compact PCs.
PCIe 4.0 x4
The PROM21 features four M.2 slots (two on the front, two on the rear) for high-speed NVMe and SATA SSDs. The versatile OCuLink port supports multiplexed PCIe/SATA signals, switchable via an onboard DIP switch—connect external GPUs or break out into four SATA drives for enterprise storage arrays. Rear I/O includes a blistering 20Gbps USB-C port and four 10Gbps USB-A ports for zero-bottleneck peripheral connections. Six internal USB 2.0 headers provide additional expansion for internal devices.
Stability
The card features a dedicated 6-pin power connector to ensure stable voltage under heavy loads, paired with a custom aluminum heatsink and a cooling fan header. It measures 175mm × 70mm and is compatible with x86 platforms (AMD/Intel) and ARM systems including Mac Silicon and Raspberry Pi 5.
Main Parameters
- Controller: AMD Promontory 21 (B650 Chipset);
- Host Interface: PCIe 4.0 x4;
- Storage Expansion: 4x M.2 Slots;
- External USB: 1x USB 3.2 Gen 2x2 Type-C (20Gbps), 4x USB 3.2 Gen 2 Type-A (10Gbps);
- Internal USB: 6x USB 2.0 front panel header
- Power Supply: PCIe slot + 6-pin PCIe power connector
- Cooling: Aluminum heatsink with onboard fan header
- Compatibility: x86 (AMD / Intel) / ARM (Mac Silicon Series / Raspberry Pi 5)
Shipping Options
| Shipping Options | Cost | Shipping Time |
| Priority Air Mail | Budget shipping cost | 10 – 15 days |
| Express (DHL/UPS/FedEx) | Base on location | 5 - 10 days |
Please refer to shipping estimate when you confirm your order.
You may choose standard shipping or express shipping depending on the items in your order and your location. As your orders may be handed over to local carriers for the final leg of delivery, tracking may not be available every step of the way.
Shipping address
Please make sure that you have provided the correct and current address for shipping and delivery. You may use P.O. boxes as your shipping address. But certain items can only be delivered to physical addresses. Large products, valuables, perishables, products with age-based restrictions, or items shipped via private carriers may require a physical mailing address or signature confirmation to be successfully delivered. Items cannot be delivered to security-restricted areas such as military bases.
Shipping time and cost
1) After an order has been successfully paid and confirmed, you will see the estimated delivery time and cost for shipping on your order confirmation page. You will also receive an order confirmation message that will outline the estimated processing time for your order.
2) The warehouse may take 1-3 days to process your order. You will receive a message once your order has been shipped.
3) You'll receive a shipment notification message that will provide you with the estimated delivery time for each package once it is shipped. We will also provide you the tracking number when it is ready. You can view this estimated delivery time under each package in your order history at the same time.
4) In most cases, your order will be delivered within the estimated time of delivery. However, the actual delivery date may be affected by flight arrangements, weather conditions, and other external factors. Please refer to the tracking information for the most up to date delivery date.
Issues regarding delivery
If your package has not been delivered or your tracking information shows that your package has been delivered but you have not received it, please contact our customer service immediately and within 30 days of the order date.