Features: Double expansion potential: Efficiently split a single PCIE X16 slot into two independent X8 slots, eliminating the need for additional motherboard slots to achieve double expansion capabilities to meet diverse needs such as high-end graphics, high-speed storage, and professional expansion cards. Seamless compatibility with mainstream motherboards: Designed for compatibility with a wide range of mainstream motherboards, the X8X8 mode can be activated through a simple BIOS setup, making upgrades worry-free and easily unlocking hardware potential. Stable and high-speed transmission: Gold finger sinking process and 5U thickening design, combined with high TG circuit board, ensure stable data transmission and speed up to PCIE GEN3 standards, to meet the needs of high-performance applications. Safety protection and easy operation: gold-plated connectors with metal shielding shells effectively resist electromagnetic interference and protect data security. The design of the buckle is easy to install and remove, and the LED indicator visually displays the working status to improve the user experience. Flexible power supply and wide applicability: SATA power port design, strong compatibility, easy access to the existing power system. Supports a variety of PCIE devices, including graphics cards, network cards, solid state drives, etc., to maximize X8 performance. Space optimization and scalability: The compact 4.04CM slot spacing effectively saves chassis space, and supports the use of PCIE extension cables, providing more possibilities for high-end chassis interior layout. Material and process: Gold finger 5U, high TG circuit board, gold-plated connector, with metal shielding shell and buckle, to ensure product stability and durability, improve data transmission efficiency and stability. Specifications: Slot configuration: Physical X16 slots that can be split into two X8 slots PCIE version: Supports the maximum GEN3 connection speed Additional features: Built-in 1 minute 2 clock split IC with 2 powered LED indicators Power supply mode: SATA power supply port Slot spacing: 40.4mm Compatibility: Supports a variety of PCIE devices, such as graphics cards, network cards, solid state drives, passthrough cards, acquisition cards, and computing cards, that can be installed and work with the maximum X8 performance. Scalability: It can be used with a PCIE extension cable to improve the layout flexibility of the chassis. BIOS requirements: The mainboard BIOS supports X8X8 mode switching. The following PCIE mainboard models are supported. For GIGABYTE: X299X DESIGNARE 10G, X299 UD4 PRO, X570 GAMING X, X570 AORUS ELITE, X570I AORIS PRO; For MSI: B550i, MEG X570 ACE, MEG X570 UNIFY, PRESTIGE X570 CREATION, X299 PRO; For ASROCK: X570 Creator, X570 Steel Legend, X570 Taichi, X299 Taichi, X299 Designer, X399 Taichi; For HUANANZHI: X99-T8D dual, X99-F8D dual, X99-F8; For SUPERMICR: X10SDV, X11DAi-N. Package Included: 1pcs Split Card