Product Overview

This adapter card is based on the B650 southbridge chip and transforms a native motherboard chipset into a standard PCIe expansion device. Via a PCIe 4.0 x4 upstream interface, it provides four M.2 NVMe slots (two on the front supporting x4, two on the back supporting x2), four SATA 6Gbps ports, two 10Gbps USB-A ports, one 10Gbps USB-C port, and one 20Gbps USB-C port. Its M.2 interfaces feature intelligent bandwidth allocation: when only the front dual-drive slots are in use, both operate on x4 links; when all four slots are occupied, the system automatically adjusts to x2 links. This card is suitable for high-end PCs, workstations, media processing, NAS systems, and gamers, providing a one-stop expansion solution for high-density storage and high-speed peripherals. 

Product Overview

• PCI Express
  - PCIe Gen4 x4, backward compatible with Gen3/Gen2/Gen1
  - Supports a data transfer rate of 16 GT/s per lane
  - Supports three power-saving modes: L0, L1, and L1SS
  - PCI MSI, MSI-X, ASPM, AER, LTR, VC

• 4 SATA Ports
  - Supports four SATA ports with a maximum data transfer rate of 6 Gb/s.
  - Supports first- and second-generation SATA standard devices.
  - Complies with the SATA 3.3 specification.
  - Supports AHCI 1.3.1 mode.
  - AHCI mode features the following functions: ➢ DIPM ➢ HIPM ➢ Hot-plug detection and notification ➢ NCQ mode ➢ Device sleep mode

• USB Ports
  - Supports 2 USB-A (10G) ports, 1 USB-C (10G) port, and 1 USB-C (20G) port;
  - Supports all xHCI 1.1 features;
  - Compatible with traditional keyboard/mouse devices;
  - Supports wake-up functionality in S3/S4 modes;
  - Supports port disabling via independent control.

• M.2 Ports
  - Compliant with PCI Express Base Specification Version 4.0
  - Compliant with PCI Express M.2 Specification Version 1.1
  - Supports PCI Express link power management
  - Supports M.2 form factors: 2230/2242/2260/2280
  - Supports M.2 M Key
  - Supports four standard M.2 interfaces, with the two front M.2 interfaces (M.2_A, M.2_C) supporting X4 links, and the two rear interfaces (M.2_B, M.2_D) supporting X2 links.
Note: When all M.2 slots are occupied, all four M.2 slots operate at x2 bandwidth. If only the two front M.2 slots are used, they operate at x4 bandwidth; if only the two rear M.2 slots are used, they operate at x2 bandwidth.

System Support

• Windows

• Linux

• Mac OS

Complete Package Contents

• 1 x Lekuo SouthBridge Max

• 1 x User Manual

• 2 x SATA Cables

• 10 x Screws

• 2 x 6.5mm Copper Stands

• 2 x 1.5mm Copper Stands

• 1 x Short Metal Plate