PoE RJ45 Splitter Kit for Ethernet Cable Sharing – Dualcomm
MSW-4204S-AD 2x 10G SFP+ and 4x Gigabit RJ45 EDD switch (Ethernet Demarcation Device) for Metro Ethernet networks w/ full 802.3ah OAM support (NID), SyncEthernet support, AC and DC power inputs
Amazon.com: Dual Port Gigabit Ethernet Converged PCI-E x1 Card,2X RJ45 Gigabit Network Interface Controller Adapter,with 82575EB Chipset for Desktops,Work Stations,Servers, with Low Profile Bracket. : Electronics
NovaStar H Series 2x RJ45 Input Card H_2xRJ45 - Olympian LED
X2 Doubler RJ45 RJ 45 CAT 5 6 7 For extension of female adapter extension Ethernet 1 Internet at one time - adaptive French brand : Amazon.nl: Electronics & Photo
ProSoft Technology AN-X2-AB-DHRIO Gateway, Ethernet/IP to Allen Bradley Remote I/O or DH+ Protocol, RJ45 Ethernet Interface | SMC