Oki OKIOFFICE 1200 Field Engineering Manual page 197

If you also install the NIC PCB, secure it using a screw too. And then attach the O.P. Shield.
11. Re-attach the SHIELD PLATE and the REAR COVER you have removed in step 1.
Note: Be sure to ensure no wire is trapped when reattaching the SHIELD PLATE and the REAR
COVER.
12. Cut out the rectangular connector space for printer port on the OPTION COVER A (you have
removed in step 2). Then reattach it.
If you have installed both the Printer control board and NIC, attach the OPTION COVER B instead
of the OPTION COVER A.
The OPTION COVER B is included in the NIC kit's carton box.
Option cover A
6-15
O.P. Shield
Option cover B