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EXLink MB308A

PCIe 4.0 x16 NVMe Adapter Card with 2 x SlimSAS 8i (SFF-8654) Ports & Redriver
Product Details
  • The ICY DOCK EXLink MB308A is a high-performance PCIe 4.0 x16 adapter card featuring two SlimSAS 8i (SFF-8654) ports for direct NVMe connectivity. Engineered with an integrated redriver IC and PCIe clock buffer, the MB308A maintains signal integrity across longer cable runs, ensuring stable PCIe Gen4 speed and reliability. Validated with ICY DOCK NVMe mobile racks and enclosures, the MB308A provides a dependable foundation for servers, workstations, and validation labs where consistent NVMe storage performance is mission critical.
  • Optimized PCIe 4.0 x16 Connectivity for NVMe Storage
    With a PCIe 4.0 x16 interface delivering up to 256Gbps of total bandwidth, the MB308A fully supports lane bifurcation to 4 × PCIe 4.0 x4, allowing flexible topologies for enterprise NVMe storage architectures. This flexibility makes it an ideal choice for both system integrators and advanced workstation builds.
  • Redriver for Stable High-Speed Signals
    In high-speed NVMe environments, PCIe signals can degrade over longer PCB traces or external cables. The MB308A’s built-in redriver equalizes and amplifies signals, enabling SlimSAS connections to sustain full PCIe Gen4 speed even with qualified long-reach cables. This ensures reliable throughput for demanding workloads such as AI/ML training, data validation, and scientific simulations.
  • PCIe Clock Buffer & SMBus Management
    To maintain timing accuracy across connected devices, the MB308A integrates a 100MHz PCIe clock buffer for SlimSAS-based NVMe storage. Built-in SMBus switching and reset management enhance stability and provide out-of-band control, ensuring reliable operation in enterprise-grade applications.
  • Validated NVMe Compatibility with ICY DOCK Mobile Racks
    The MB308A has been validated with ICY DOCK NVMe mobile racks and enclosures, ensuring reliable interoperability for enterprise and workstation deployments. This reduces integration risk for system builders and provides customers with a fully tested solution for high-speed removable NVMe storage.

    To simplify cable and interface selection, ICY DOCK provides an NVMe Selection Tool, which helps you filter by connector type, host card, and enclosure to find the right combination:
    NVMe Storage Selection Guide

    You can also browse the full list of qualified NVMe cables here:
    ICY DOCK NVMe Cable Catalog
  • Universal PCIe Adapter Card Support (Gen2/3/4/5)
    The EXLink MB308A is designed to operate in any PCIe x16 slot, supporting PCIe 2.0, 3.0, 4.0, and 5.0 platforms (operating at PCIe Gen4 speed). Its universal compatibility makes it an excellent fit for diverse system environments, from enterprise servers to R&D labs.
Main Features
• 2 x SlimSAS 8i (SFF-8654) ports, compliant with SFF-9402 Rev 1.1
   
• PCIe 4.0 x16 interface supporting up to 256Gbps total bandwidth
   
• Integrated redriver IC for long-reach, high-integrity PCIe Gen4 NVMe signaling
   
• 100MHz PCIe clock buffer for stable enterprise timing
   
• Supports lane bifurcation to 4 × PCIe 4.0 x4 topologies
   
• Validated compatibility with ICY DOCK NVMe mobile racks and cables
   
• Universal PCIe slot support: PCIe 2.0 / 3.0 / 4.0 / 5.0 (runs at Gen4 speed)
   
• Full-height bracket, CE/UKCA/RoHS/REACH compliant
   
• 2-year limited warranty
Specification
Model Number : MB308A
Compatible Drive Type : NVMe
Support Slots : Works with x16 PCIe 2.0/3.0/4.0 or 5.0 slots on motherboards,
(motherboard required PCIe x16 slots bifurcated into x4/x4/x4/x4)
Host Interface : 1 x PCIe x16 connector
Endpoint Interface : 2 x SlimSAS 8i(SFF-8654) , pin-out defined by SFF-9402 Rev 1.1
Transfer Rate : PCIe 4.0 x 16 up to 256Gbps
Supported Operating Systems : No limitation
Package Content : Device, mounting screws, user manual
Dimension (W x H x D) : 120.8 x 165.1 x 21.5mm
Product Net Weight： 66.8g
Package Gross Weight： 162g
Compliance： CE, UKCA, RoHS, REACH
Warranty： 2 years warranty

 
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