Using RTL8111H chip, stable performance and powerful functions.High-performance large heat sink is adopted to reduce the temperature of the network card, improve the working stability, and have a longer service life.Data transfer rate 1000mbps high-speed transmission via CAT5UTP cable or CAT 3 UTP (10Mbps only) cable.Realize cross detection and automatic correction, polarity correction, adaptive equalization, cross talk cancellation, cancellation timing recovery, error correction and other functions.Provides high-speed robust transmission and reception capabilitiesType: Gigabit LANInterface: 4*Ethernet portApplicable network type: EthernetFull/Half-Duplex: Full-duplex flow controlChip: RTL8111H chipTransfer rate: 1000mbpsBus Type: PCI Express 1.1Supported protocols and standards: csma/CDApplicable OS: Windows10(32/64), 8/8.1(32/64), 7(32/64), Vista(32/64), XP(32/64), 2000Colour:greenMaterial:PCBPackage Contents:1 x Network Card1 x BezelOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.