Features: LED monitoring indicator, the blue light is always on when the hard disk is inserted, and the blue light flashes when reading data The chip enhances heat dissipation, long‑lasting high temperature resistance, and more stable operation No need to drive plug and play, support mainstream for Windows/for Linux/for NAS/for Synology NAS Support for interface hard disk / optical drive / SSD solid state drive. Small size, easy to carry and store, convenient to use and with good performance. Specifications: Item Type: Expansion Card Product Master: For ASMedia ASM1166 master Product Interface: PCI-E 4X8X16X (recommended for use under PCI-E3.0, faster) Support System: for WIN8/for WIN10/for Ubuntu Package includes: 1 x Expansion Card 1 x Low-Profile Bracket