Features: asmedia ASM1084e chip, super fast and high-capacity transfer solution, stable and reliable. PCI for Express Base SPEC 2.0 is backward for SPEC 1.1 & 1.0a With 4 port usb power moduel, not need for extra power supply; Supports simultaneous operation of multiple USB 3.0, USB 2.0, and USB 1.1 devices. Built-in 4-pin power connector for receiving for extra power supply from the system Supports Linux / XP / for Windows 7/for Windows 8 / for Windows 8.1 / for Windows 10; for major mainstream application operating systems on the market, easy to install, plug and for play Specifications: Name: PCIe x1 USB 3.0 to 4xPCIE Adapter Card Bus Type: PCI for Express x1 Slot Interface: 4 x USB 3.0 interface Main Chip: asmedia ASM1084e Color: As Shown Green Transfer Speed: 5Gbps Size: approx 64x56mm/2.52x2.2in Product weight: 100g Standards compliant: PCI for Express Base SPEC 2.0 is backward for SPEC 1.1 & 1.0a PCI Power Management Specification 1.2 Port configuration: 1 PCIe x1 Gen2 upstream port to 4 PCIe x1 Gen2 downstream ports Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 for cm differences due to manual measurement. Package includes: 1 PC x PCIe x1 USB 3.0 to 4xPCIE Adapter Card 1 PC x Half-height Baffle