*Designed for a max monthly volume of 50K pages (Letter paper, 20lb. Bond). Mainframe includes 10.1" Keyless Smart Operation Panel, 220-Sheet SPDF, Duplex, 2 x 550-Sheet Paper Trays, 100-Sheet Bypass Tray, Drums, Developer, Color Scanning and Printing, USB Host Interface, Gigabit Ethernet, DOSS, PDF Direct Print, HDD Encryption, Java VM, Scan to/Print From USB/SD Card, Postscript Emulation and 2GB RAM & 320GB HDD. Envelope feeding via standard 2nd paper drawer & bypass tray. The standard DOSS included with the mainframe is not ISO 15408 certified. One of following must be installed on the mainframe: PB3250 (One-Tray Paper Bank, 550 Sheets, supports 7.25" x 10.5" to 12" x 18" 408114), PB3240 (2-Tray Paper Bank, 550 Sheets x 2, Supports 7.25" x 10.5" to 12" x 18" 408112), PB3260 (Tandem Large Capacity Tray, 1,000 Sheets x 2, Supports 8.5" x 11" only. 408116) or Cabinet Type F (100478FNG) . The DataOverWrite Security System does not overwrite the HDD for the Color Controller E-23C (417925)