This SY-PEX50133 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.

• Chipset: AMD B650
• Host Interface: PCIe Gen 4 X4, backward compatible with Gen 3/Gen 2/Gen 1. Supports a data rate of 16 Gt/s per channel.
• No bifurcation required. Works perfectly with any motherboard. No BIOS setup needed.
• Expand your system with additional 12 Ports: four NVMe M.2 ports, four USB ports, adn four SATA ports.
• SATA Interface: Supports four SATA ports with transfer speeds of up to 6 Gb/s.
• USB Interface: Supports two USB-A (10G), one USB-C (10G), and one USB-C (20G). 6-Pin cable required to enable stability while connecting to high-power USB devices.
• M.2 Interface: Supports four M.2 Slots. Supports M.2 M-Key and four standard M.2 slots. The two front M.2 slots (M.2_A and M.2_C) support X4 connections, while the two rear slots (M.2_B and M.2_D) support X2 connections. 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 occupied, they operate at x4 bandwidth; if only the two rear M.2 slots are occupied, they operate at x2 bandwidth.
• Easily installed in all form factor of computer case and server.
• Compatible with Windows 10/11, Linux, and MacOS.
• Plug-and-play installation: With easy installation and compatibility with standard PCI Express slots.