Solvline Eddy Serial v2.5.1.1 - Manual (Page 23)

Eddy User's Guide
23
3.3 Eddy-S4M v2.1
Mini PCI Type Slot..
When developing main board, user must materialize transformer and RJ-45 connector (or RJ45 in which transformer
is included (LAN-Mate or MAC Jack)). Since Driver IC is in Eddy-S4M, Serial port can be integrated easily only by
attach connector.