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- $259.00
- Free 30-day Returns
$135.00
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MINISFORUM ESP4B PCIe Expansion Card with AMD B850, 4X PCIe4.0 SSD Slot, 1x Oculink Port, support SATA HDD, 1x USB Type-C(up to 20Gbps) Active Cooling for Mini PC, Workstation, NAS Docking Station
- High-Performance ModeThe ESP4B features 4 x PCIe 4.0 SSD slots. When no SSDs are installed in the SSD3 and SSD4 slots, it automatically enters High-Performance Mode. SSD1 and SSD2 run at full PCIe 4.0 ×4 speed. This mode is ideal for scenarios demanding maximum single-disk performance, such as system drives, high-speed cache drives and working disks for video editing.
- Full-Configuration ModeWhen all four M.2 slots are populated with SSDs, the device switches to Full-Configuration Mode (bandwidth halved). SSD1 to SSD4 all operate at PCIe 4.0 ×2. It maximizes storage expansion capacity and allows four NVMe SSDs to work simultaneously, suitable for mass storage, data backup, media libraries and similar use cases.
- OCuLink Expansion PortThe ESP4B comes with one onboard OCuLink port, which expands to four SATA 3.0 ports for connecting HDDs or SATA SSDs (using the included OCuLink-to-4×SATA cable).
- USB Type-C PortOne USB Type-C port is fitted on this deivce for high-speed peripheral connections. It follows the USB 3.2 Gen 2x2 standard with a maximum transfer speed of 20 Gbps and supports 5V / 3A power output. It can connect portable SSDs, USB flash drives, smartphones and other USB TypeC devices.
- Intelligent Power ManagementSupports ASPM Active State Power Management to reduce standby power consumption, known as auto power-saving technology.
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Learn more about the Detailed Specifications
| First Listed on Newegg | October 08, 2026 |
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Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by MINISFORUM Official Return Policy
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