This is a standard USB pin connector for motherboards with standard spacing. One hole is blocked to prevent incorrect insertion. Features a built-in USB interface for connecting dongles, U-disks, or built-in USB Bluetooth. S: The motherboard's USB 2.0 pins have two rows. If there's another patch on the 4-hole side, choose Type A. This USB will not interfere with other patch cables. B: The motherboard's USB 2.0 pins have two rows. If there's another patch on the 5-hole side, choose Type B, and this USB will not interfere with other patch cables. Provides lossless transmission of high-speed USB signals. Includes 2 USB ports for user convenience in connecting various devices as needed. Specifications: Color: Black Type: Type A, Type B (Optional) Quantity: 5 Size: 3.3 * 1.5 * 2 cm / 1.3 * 0.6 * 0.8 inches Weight: Approx. 37g Package List: 5 * USB Motherboard Connector Guaranteed Satisfaction: Customer satisfaction is our top priority. If you encounter any issues with the product after receiving it, please contact the seller immediately. We strive to provide satisfactory after-sales service.