Canon iR C6800 Series Portable Manual page 442

14. Color Network Multi-PDL Printer Kit-C1 (non-Japanese model only)
15. Card Reader-C1
16. Card Reader Mounting Kit-C1
17. Delivery Tray-K1
18. Original Holder-K1
19. Stamp Unit-A1
20. Key Switch Unit-A2
21. Security Kit-A1P/A1U
22. 256-MB Expansion RAM-A2
23. USB Interface Board-A3
24. TokenRing Interface Adapter iN-TR2 (US model only)
25. Color imagePass-D1 (US model)
Color Network Printer unit-D1 (Other model)