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AC320004-4 Microchip, Daughter Board, 3-Port LAN9303 Ethernet Switch, RMII Ethernet Control Applications | Farnell Austria
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3 Port Network Switch 10/100/1000mbps 8pin Header Port Gigabit Ethernet Switch Module Fast Switch Module - Tool Parts - AliExpress
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Black Box LGB304A 4-Port Gigabit Unmanaged Switch LGB304A B&H