7012 Common Devices

7012 Thick/Thin Ethernet Riser P/N 52G4737  FRU 43G0382 Card 2-8

F1 1 A, 250V fuse
J1 planar connector
J2 AUI / coax
J3 AUI connector 
J4 BNC connector
PS1 Valor PM6030
U1 Intel D82C501AD
U2 DP8392CN-1
Y1 20.000 MHz xtal

PS1 Valor PM6030 12V to 9V power regulator

DP8392C.pdf   DP8392C/DP8392C-1 CTI Coaxial Transceiver Interface

. Place the two jumper blocks on the upper two rows of pins to configure for the thick connector, or on the lower two rows for the thin connector.

7012 Twisted-Pair Ethernet Riser P/N 32G2000  FRU 00G1276 Card 2-9

J2 RJ45
U1 D82C501AD
Y1 20.000 MHz osc

Daughtercard is marked "i82521TB"

 LINK jumper ON for 10baseT networks
 LINK jumper OFF if network is not 10baseT

 The green LED on the TP riser lights when the riser is properly connected to a 10baseT network . If  the LED is off, - The TP cable is defective/ not connected, network is not 10baseT, or the TP riser card is not properly installed.

7012 SCSI Bus Extension Card  P/N 51G9781   FRU 00G2721

Rick says:
   As you can see, there's not much to this "SCSI Bus Extension Card".  It has a 62 card edge connector (31 on each side) that plugs into the planar, and two standard SCSI narrow connectors (CN1, CN2) are available to attach 3.5-inch SCSI hard drives.

9595 Main Page