Features: 100% brand new and high quality 4 Way PCI V2.2 fast ethernet switch adapter board, for multiple rj45 lan connecting. Equipped with high technology RTL8305+8100CL Chipset Compatible with 10Base-T: 3/UTP, 100Base-TX: 5 network topology. Exchange rate: 10Mbps: 14880pps; 100Mbps: 148800pps Network standard support: IEEE 802.3 IEE 802.3u IEEE 802.3x Package Includes: 1 PC x PCI Ethernet Switch Board Specifications: Network type: Fast Ethernet Switch Board Bus Type: PCI V2.2 Transmission rate: 10Mbps/100Mbps Network standard: IEEE 802.3 IEE 802.3u IEEE 802.3x Media Media: Non-modular Link Ports: 4 x RJ45 Transmission mode: full duplex/half duplex Exchange Mode: Storage Transfer Network topology: Compatible with 10Base-T: 3/UTP, 100Base-TX: 5 Exchange rate: 10Mbps: 14880pps; 100Mbps: 148800pps MAC-Size: 8K Indication panel: Link/Act, 100Mbps note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.