The standard design of a LAN expansion card is split between a motherboard and a daughterboard. The motherboard connects directly to the system, which in turn is connected to the daughterboard fitted with ports. These ports are usually RJ-45 ports (standard Ethernet ports) that you find on any laptop.
The Cost of Redesign
Many applications require different solutions such as robust and waterproof ports and connectors, or there are space limitations that do not allow for a separate daughterboard.
The difficulty here is that LAN transformers (a necessary component that strengthens that LAN signal) are mostly located in the ports on the daughterboard. When moving these transformers to the motherboard, other parts get shuffled around. As space is already limited, this leads to parts sticking outside of board space, potential signal interference, and the need for large-scale re-design. A Seamless Innodisk Solution
EMPL-G203 is a GbE LAN card with 1000V isolation, designed in such a way to that a daughter board is unnecessary. It seamlessly offers connection through an RJ-45 cable, as well as customer defined cable standards to fulfill their specific application, especially in areas such as defense and aerospace. The card allows for easy integration with M12 which encompasses IP 65/67/68 waterproof designs, and the daughterboard-less card still passes EMC tests, has Ethernet compliance, and supports wide temperature. Product Highlight mPCIe to dual GbE LAN Module 2019 Innodisk Selection Guide
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