4 layers119 × 73.9 mm

Fw16 oculink8i
Terrails/FW16-OCuLink
The schematic in itself is pretty simple. You only need to connect the TX and RX PCIe lanes to the correct pins of the OCuLink connector.
55 parts43MIT
Boards in 1 GitHub repository, designed in KiCad, that use the TL331LVDBV by Texas Instruments (-40℃~+125℃ 1 1.5uV/℃ 1.65V~5.5V 1pA 25uA 400uV 5pA 600ns 65dB 6V ESD protection Open-drain Rail-to-rail input SOT-23-5 Comparators ROHS). See how each wires it, with its parts, size, README and files; the TL331LVDBV’s symbol, footprint and pinout are on its own page.

Terrails/FW16-OCuLink
The schematic in itself is pretty simple. You only need to connect the TX and RX PCIe lanes to the correct pins of the OCuLink connector.