The Cudy PE25 is a high-performance PCI Express network adapter that adds 2.5 Gbps wired network connectivity to your desktop computer. This speed, up to 2.5 times that of standard Gigabit Ethernet, is ideal for applications requiring high bandwidth. It works by plugging into a PCI-E 2.1 x1 or higher slot, offering one of the most practical ways to upgrade your existing network infrastructure. Technically, this adapter can automatically switch between 10 Mbps, 100 Mbps, 1 Gbps, and 2.5 Gbps speeds, and supports modern network protocols such as 802.3x Flow Control and 802.3az Power Saving. It is compatible with a wide range of operating systems from Windows 7 to Windows 11 and Windows Server 2012 to 2022, and also offers Linux support. With compact dimensions of 64x56x15 mm and a lightweight design of 37.2 grams, it easily fits into any case type; it also comes with a low-profile bracket. This adapter is an excellent choice for providing fast and reliable network connectivity, especially for NAS devices, high-resolution video editing workstations, or gaming computers. It works with existing Cat5e or Cat6 cables, allowing you to significantly increase your network speed without changing your infrastructure. It is ideal for speeding up file sharing in office environments or for an uninterrupted network experience at home with a 2.5G compatible switch. Technical Specifications: - Model: PE25 2.0 - Interface: 1x 2.5G RJ45 - Data Rate: 10/100/1000/2500 Mbps - PCI Express: PCI-E 2.1 x1 or higher - Supported Operating Systems: Windows 7/8/8.1/10/11, Windows Server 2012~2022, Linux - Dimensions: 64x56x15 mm - Weight: 37.2 g - Operating Temperature: 0°C ~ 70°C - Certifications: FCC, CE - Package Contents: PE25, Low-Profile Bracket, Installation Guide