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Lekuo SouthBridge Max PCIe 4.0 Multi-Function Expansion Card - No Motherboard Bifurcation Required

Lekuo SouthBridge Max PCIe 4.0 Multi-Function Expansion Card - No Motherboard Bifurcation Required

$129.00 USD
$269.00 USD $129.00 USD
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PB65MX3
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製品説明

⚠️ Limited Edition – Stock is limited and restocked irregularly. Order while supplies last!

Lekuo SouthBridge Max PCIe 4.0 Multi-Function Expansion Card

Lekuo SouthBridge Max PCIe 4.0 Multi-Function Expansion Card

⚠️ PCIe 4.0 x4 Uplink | 64 Gbps Shared Bandwidth Pool
Expand your desktop's capabilities without the hassle of motherboard bifurcation. Powered by an onboard chipset switch, the Lekuo SouthBridge Max (PB65MX3) consolidates 4× M.2 NVMe slots, 4× SATA ports, and 4× high-speed USB ports into a single PCIe 4.0 x4 slot.

Massive 4-Slot NVMe Storage No Bifurcation Required

No Motherboard Bifurcation Required

Works in any standard PCIe 4.0 x4 (or x8 / x16) slot. The onboard switch chip handles lane distribution automatically—no BIOS bifurcation support or complex configuration needed.

64Gbps Smart Dynamic Bandwidth Pool

64 Gbps Smart Bandwidth Pool

All downstream interfaces share a total upstream bandwidth pool of 64 Gbps (PCIe 4.0 x4) with smart dynamic scheduling:

  • M.2 NVMe Allocation: When 2 front drives are installed, both run at full PCIe 4.0 x4 links. When all 4 M.2 slots are populated, the links automatically adjust to x2 each to share the upstream pool efficiently.
  • Intelligent Load Balancing: Dynamic bandwidth scheduling allocates maximum speed to active drives while keeping all connected storage and peripherals responsive.

Massive All-in-One IO Expansion Ports

Massive All-in-One Expansion (12 Downstream Interfaces)

  • 4 × M.2 NVMe Slots: M-Key 2280/22110 (2× PCIe 4.0 x4 / x2 switchable + 2× PCIe 4.0 x2)
  • 4 × SATA 3.0 Ports: Up to 6 Gbps each for mass storage HDDs/SSDs
  • 1 × USB 3.2 Gen 2x2 Type-C: Up to 20 Gbps ultra-high-speed transfer
  • 1 × USB 3.2 Gen 2 Type-C: Up to 10 Gbps
  • 2 × USB 3.2 Gen 2 Type-A: Up to 10 Gbps each

Dedicated 6-Pin Power Connector for Stable Power Delivery

Broad OS Compatibility Windows Linux macOS

Plug & Play Across Multiple OS

Fully compatible with Windows 10/11, Linux, and macOS. Native OS drivers recognize the card out of the box—no manual driver installation required for standard workflows.

Lekuo SouthBridge Max PB65MX3 Specifications

Specifications

  • Model: PB65MX3
  • Upstream Interface: PCIe 4.0 x4 (64 Gbps dynamic shared bandwidth)
  • Slot Compatibility: PCIe x4, x8, x16 slots (No Bifurcation required)
  • Output Ports: 4 × M.2 NVMe SSD (M-Key), 4 × SATA 3.0 (6 Gbps), 1 × USB-C (20 Gbps), 1 × USB-C (10 Gbps), 2 × USB-A (10 Gbps)
  • Auxiliary Power: 6-Pin PCIe power connector (dedicated USB power ceiling)
  • Dimensions: 174 × 69 mm
  • OS Support: Windows 10/11, Linux, macOS
  • Form Factor: Standard / 2U low-profile compatible
  • Dedicated 6-Pin Power Supply

The card features an onboard 6-Pin PCIe auxiliary power connector (EXT_PWR) designed to supply dedicated, independent power to connected USB peripherals and external drives.

*Note: The 6-pin connector increases the electrical power delivery ceiling to prevent dropouts under heavy loads; it does not alter or increase the 64 Gbps shared bus bandwidth.

Lekuo SouthBridge Max Package Contents