Features: brand new and high quality Easily to update your computer to 4 ports USB3.0（1xType C+3xType A) with PCI for Express to USB3.0 controller adapter card. High performance FL1100 Chip,support 5Gbps Super speed USB 3.0 transfer rate. (The actual transmission speed is limited by the setting of the device connected.) Operating System compatibility : for Windows XP/Vista/7/8/10/MacOS Pro 10.8.2 Above With quick and easy installation, this USB 3.0 PCI for express I/O Card offers a simple solution for connecting to and using USB 3.0 devices on your standard desktop PC. Enjoy copying videos, music, photos, data files between USB devices and the computer at blazing fast speeds. Specifications: Name: PCI for Express To 4-Port USB3.0 Type C Expansion Card Number of Interfaces: 3 Port USB 3.0 + 1 Type C Backwards for USB 2.0 and 1.1 devices; Color: Black Transfer Speed: 5Gbps Size: approx 120x80mm/4.72x3.15in Product weight: 145g Product material: Metal System support: for Windows XP/Vista/7/8/10/MacOS Pro 10.8.2 Above Package Includes: 1 Set x PCI for Express USB Expansion Card 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.