Feature: 1. RELIABLE PERFORMANCE: Equipped with powerful main control chip, this USB expansion card offers stable and efficient performance. Compatible with for LINUX systems, it provides high speed data transfer without the need for external power supply. 2. ENHANCED STABILITY: Featuring 7 soild state capacitors, this card ensures stable power supply to USB devices, making it ideal for use in compact cases where space is limited. The soild capacitors guarantee consistent power delivery for a reliable performance. 3. FAST AND VERSATILE: With a blazing speed of up to 5Gbps, this PCI E adapter is compatible with USB 2.0, USB 1.1, and USB 1.0 devices, enabling faster and more stable data transfer. Experience efficient data transmission with this high speed adapter. 4. CONVENIENT FUNCTIONALITY: Offering a maximum 5V 2A USB power output and hot swapping support, this adapter allows for easy and convenient use. The USB ports support hot plugging, making it effortless for users to connect and disconnect devices as needed. 5. UNIVERSAL COMPATIBILITY: Compatible with for WIN7/10/11 and for LINUX systems, this PCI E 1X adapter features four USB A output ports, providing versatile connectivity options for various devices. Enhance your system with this reliable and efficient USB expansion solution. Specification: Item Type: PCI E 1x To 4 USB 3.0 Slot Adapter Material: PCB Interface: PCI E 1X (Supports 1X/4X/8X/16X Slots) Output Interface: Built in Dual Layer 4 Port USB A 5Gbps Speed: 5Gbps System Support: for WIN7, for WIN10, for WIN11, for LINUX. Package List: 1 x PCI E 1x To 4 USB 3.0 Slot Adapter Note: For systems below for WIN7, driver installation speed is slow, it is recommended to use for win10 and above systems.