Here's the DEBNT installation from VAX 8200/8300 Installation Guide. I really remembered that I had the real docs for DEBNT but I can't find them at the moment, anyway here goes: 4.8 DEBNT INSTALLATION 1. Remove processor cabinet front and rear doors 2. From the rear of the processor cabinet, release the BA32 box track lock (Figure 2.14). 3. Slide the BA32 box out of the cabinet. 4. Remove the BA32 box top cover. 5. Insert the T1034 module in the VAXBI cardcage. 6. Rotate the BA32 box up and remove the bottom cover. 7. Install the transition header on the backplane if the slot holding the T1034 module. 8. From the rear of the BA32 box, open the appropriate cable restraint and feed the transition end of the DEBNT cable into the box. Pull enough of the cable into the box to feed the cable under and through the rear brace and up to the backplane of the slot that holds the T1034 module. 9. Connect the DEBNT cable to zone E (left) of the transition header on the backplane of the slot that holds the T1034 module. 10. Connect the 12V power cable from the power supply distribution board to the pigtail connector on the DEBNT cable. 11. Close the cable restraint at the rear of the BA32 box. NOTE Route the DEBNT cables separately from the power cables insider the processor cabinet. 12. Replace the BA32 box bottom cover. 13. Rotate the BA32 box down. 14. Connect the DEBNT cables to the distribution panel. 15. Replace the BA32 box top cover. 16. Power up the system. The DEBNT self-test runs upon power up. Check that the yellow LED on the T1034 module lights. If the yellow LED does not light, refer to the DEBNT Ethernet Tape Controller Technical Manual. 17. Refer to the DEBNT Ethernet Tape Controller Technical Manual for the complete acceptance procedure. 18. Slide the BA32 box into the processor cabinet. 19. Replace the processor cabinet front and rear doors. -- Jarkko Teppo jate(a)uwasa.fi