TypeC female header with a nut design for secure mounting at the rear PCI position baffle, enabling firm fixation in the chassis. Compatibility tested: every device with a TypeE port can be accessed and used normally. Fullheight intelligent PCI baffle: suitable for standard chassis installations; small chassis baffles are also compatible. Shielding for reliable performance: shielding layer uses tincoated copper wire winding to achieve complete shielding, ensuring stable and efficient data transmission. USB 3.1 TypeE to TypeC conversion: converts the motherboard USB 3.1 TypeE port to a TypeC female port. The design uses the chassis PCI position to facilitate connection of TypeC devices, with the motherboard USB TypeE header seated on a compatible base. Use scenarios Standard desktop build: convert a TypeE header to a TypeC port to provide convenient USBC connectivity on the rear panel for external drives, docks, or peripherals, while maintaining a clean chassis profile. Small form factor or compact chassis: fullheight PCI baffle supports robust mounting in compact cases where space is limited, while still enabling TypeC access. System upgrade or retrofit: upgrade older motherboards lacking native USBC backpanel ports by adding a TypeC connection through the TypeE header, improving accessibility and futureproofing.