Adds 2 USB-A ports + 1 USB header to PC/server/NAS via PCIe x1; UPD 720201 chip, 5Gbps shared PCIe 2.0 X1 bandwidth, compatible with Intel/AMD/ARM. Total 5V3A power output drives 3x5V1A or 1x5V2A high-power devices; USB header extends 2 USB 3.0 to front panel (cable not included). Dual-layer protection: independent power manager, inductor, fuse & capacitor per channel + PCB fuse. Plug-and-play on Windows 11/10/8, Server 2012–2022 & most Linux; driver for older Windows; not for Mac OS. PCIe x1 installation, standard profile bracket (not for slim cases); self-powered, no extra power needed. GLOTREND U3055-N 2-Port PCIe USB-A Expansion Card with 19Pin USB Header for Front Panel, Compatible with Windows Linux (Not for Mac OS)