There are three modes that can be manually switched Mode 1: 2 x 16 outputs (PCIe4.0) Mode 2-4 x 8 outputs (PCIe4.0) Mode 3_8 x 4 outputs (PCIe4.0) Equipped with full height and half height baffles Powerful Technology_Compatible with PCIe-4.0_3.0_2.0 Brand new, quiet, stable, low heat generation, strong compatibility The motherboard does not support splitting and can still be used (direct mode) PCIe dynamic allocation - all interfaces can be used simultaneously ◆ Silent version ✔ Support esxi ✔ Support Black Synology PCH (South Bridge) can also be used for the outlet slot ● Support insertion into the x4 extension of Thunderbolt for use PCIe × 1_ × 4_ × 8_ × 16 bandwidth can be used ● No motherboard PCIe disassembly (plug into PCIe slot for direct use) 4 8654 8i interfaces (can be converted to PCIe or connected to solid-state drives)