J0108
pin     setting         description
1-2     in              diag test 4MB main memory
3-4     out             ETH SIA CAL. test
5-6     out             SCSI on (on is active high)
7-8     in              DCP on (on is active high)

J0123
1-2     in              68020 CLK 15MHz
3-4     out             68020 CLK 12.5MHz
5-6     out             68881 CLK 12.5MHz
7-8     in              68881 CLK 15MHz

J0642
1-2     in              Level 1 Ethernet XCVR
        out             Level 2 Ethernet XCVR

J0702
1-2     out             27256 K BOOT PROM
3-4     in              27512 K BOOT PROM

J1500
1-2     in              100MHz video CLK

Switch 0618
1-8     Off             Set for Ethernet
1-8     on              Set for Thin Ethernet

The 3/60 is nicer for Ethernet; has an auto sense setting...

Erik