An apparatus includes a pass-through module that includes connector pins to connect with at least one active motherboard connector and to separately connect with at least one routing motherboard connector. A routing function on the pass-through module redirects a set of bidirectional lanes from the connector pins connected to the active motherboard connector to the connector pins connected to the routing motherboard connector to enable a connection of the set of bidirectional lanes to at least one other motherboard connector via the routing motherboard connector.