600x600 dpi, HP FastRes 1200dpi effective output, 25ppm, first page out < 7 sec.; 400MHz RISC CPU, 32MB RAM; Host based printer + HP PCL 5e, 8000 pages monthly duty cycle, 250 sheets input tray (15 envelopes) + 10 sheet priority feed slot, 60 to 163 g/m2, size: A4, A5, B5, postcard, envelopes (C5, DL, B5) 147x211 to 216x356mm, priority feed slot A6, 76x127 to 216x356mm; automatic duplex printing A4 60 to 105 g/m2; USB 2.0 + 10/100 Ethernet (option: J8021A JetDirect ex2500 802.11b/g ext. print server); 4 LED indicator lights (Go, Reday, Attention, Toner Low), 2 buttons (Go, Job cancel); Win 7 (32/64bit)/Win Vista (32/64bit)/Win XP (32/64bit)/Server 2008/2003/Mac OS X v10.4, v10.5, v10.6/Linux; toner cartridge: CE278A Black 2100 pages