@philpem @azonenberg @benjojo @jaseg @gsuberland @hennichodernich I've done a basic circuit, power not routed yet and I could add a ft232r (max speed 3mbps). It's my first differential circuit, so I would appreciate if someone could throw an eye on the differential signal area? would that work? caps should be integrated in the SFP so I did not add any. The receiver is MC100LVELT23 (at farnell) , seems to have integrated pull ups/down, so I only added a diff termination. Transmitter MC100LVELT22.