Ultra-Fast: 10/100/1000Mbps PCIe Adapter upgrade your Ethernet speed to Gigabit. Automation: Wake-on-LAN supporting Auto-Negotiation and Auto MDI/MDIX. Supports: IEEE802.3x Flow Control for Full-duplex Mode and backpressure for Half-duplex Mode; 4k Bytes Port: 1x 10/100/1000Mbps RJ45 Network Media. Compatibility: Windows 11, 10, 8.1, 8, 7, Vista, XP. Dual Bracket: Low profile and standard profile bracket inside works with both mini and standard size PCs.