StarTech.com 4 Port PCIe Network Card - Standard Profile NIC - RJ45 Port - ST1000SPEX43 - Ethernet Adapters - CDW.com
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Amazon.com: 4 Port Quad Gigabit Ethernet PCI Express 2.1 PCI-E x1 Network Interface Card (NIC) 10/100/1000 Mbps Realtek Chipset SI-PEX24042 : Electronics
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4-Port Unmanaged Switch | 2-RJ45 Ethernet Ports, 2-SFP Fiber Ports | 4 Port Fiber Optic Switch | Versitron
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