ESP4B-850 PCIe Expansion Card
Note:
Expected to ship from Hong Kong in early October.
- PCIe 4.0 ×4 Host Interface
- 4× M.2 NVMe SSD Slots
- 1× OCuLink & USB 3.2 Gen 2×2
- Intel & AMD Compatible
- ASPM Support
More Built Into One Slot
Built for More Storage Scenarios
Workstation Storage Expansion
Add up to four NVMe SSDs through one PCIe slot for video projects, AI datasets, virtual machines, cache, and large working files. More high-speed storage. Less internal compromise.
Large Local Storage
Connect up to four SATA 3.0 HDDs through OCuLink for backups, archives, media libraries, and capacity-focused storage. NVMe for speed. SATA for scale.
High-Speed External Storage
USB-C delivers up to 20Gbps for external SSDs and other compatible high-speed devices. Fast data access, built right into the card.
Homelab & Server Builds
Combine NVMe, SATA, and USB expansion in one PCIe slot for compact servers, storage nodes, and Homelab systems. Turn one PCIe slot into a flexible storage hub.
SSD2: Up to PCIe 4.0 ×4
Best suited for high-speed working drives, project files, cache storage, and workloads that prioritize per-drive performance.
Every Connection. One card.
OCuLink-to-4×SATA cable.
PCIe 3.0
Mode supportedSATA HDD
power cables are supplied separately by the userUSB 3.2
Up to 20Gbps
SSD2: Up to PCIe 4.0 ×4
SSD3: Up to PCIe 4.0 ×2
SSD4: Up to PCIe 4.0 ×2
With four SSDs installed, all slots operate at PCIe 4.0 ×2.
PCIe 4.0 ×4
PCIe 4.0 ×4 host interface.
Supports PCIe 4.0 ×4 or higher host slots.
Package Contents
ESP4B-850
SATA Data cable
Long Retaining Strip
Installation Screw Set
User Manual
ESP4B specification
ESP4B PCIe Expansion Card
PCIe to 4 × NVMe M.2 Expansion Card
AMD B650/B850
Intel / AMD platforms
PCIe 4.0 x 4
(Requires a PCIe 4.0 x 4 or higher slot on the host system)
4 x M.2 NVMe SSD slots
High-performance mode: SSD1 / SSD2 support PCIe 4.0 x 4 when SSD3/ SSD4 are unpopulated;
full-population mode: all four M.2 SSDs operate at PCle 4.0 x 2
SSD1: up to PCIe 4.0 x 4
SSD2: up to PCIe 4.0 x 4
SSD3: up to PCIe 4.0 x 2
SSD4: up to PCle 4.0 x 2
1 × OCuLink port (supports 4 × SATA 3.0 HDDs via included custom OCuLink-to-4 × SATA data cable);
SATA HDD power cable is customer-supplied.Switchable to PCIe 3.0 mode.
1 x USB Type-C, USB 3.2, up to 20 Gbps. 5V / 3A
Supports ASPM
NVMe SSD storage expansion / external SATA HDD expansion