<1> Cassette Feeding Unit, High Capacity Cassette Feeding Unit-G1 and Cabinet Type-Y cannot be installed at the same time. <2> 1st Copy Tray Kit-C1, Inner Finisher-N1, Staple Finisher-AH1, Staple Finisher Lite-B1 or Booklet Finisher-AH1 cannot be installed at the same time. <3> Includes Buffer Pass Unit. <4> Requires Staple Finisher-AH1, Staple Finisher Lite-B1 or Booklet Finisher AH1. <5> Staple Finisher-AH1, Staple Finisher Lite-B1, Booklet Finisher-AH1 can not be installed with Copy Tray-T2. <6> When installing USB Keyboard it is recommended to install the Utility Tray-B1 or Universal Keyboard Stand-A2. <7> A standalone stapler that provides quick and easy corner- or side-page stapling for up to 50 sheets. Uses Staple-P1 (1008B001AA). 2 cartridges per case. 5,000 staples per cartridge. <8> Inner Finisher/Staple Finisher includes 1 staple cartridge (5,000 staples). DOES NOT include additional staple cartridges. <9> Booklet Finisher includes 1 staple cartridge for stapling (5,000 staples) and 2 staple cartridges for booklet (2,000 x 2 staples). DOES NOT include additional staple cartridges. <10> Requires Attachment Kit for Reader <11> A standalone staple remover with easy one-touch operation ensuring documents are ready for scanning, copying and faxing. <12> Requires 1st Copy Tray Kit-C3