Epson PP-50 “Publishing Speed (Burn and Print) : Burn & Print Speed CD : 15 Discs/h (fast mode) using Epson-recommended CD-R. Burn & Print Speed DVD : 8 Discs/h (fast mode) using Epson-recommended DVD-R. STACKERS : Stacker 1 : Removable, 50 discs. Stacker 2 : Removable, 50 discs. Stacker 3 : Fixed, 20 discs. Print Specifications : Printing Speed : 60 Discs/h (fast mode), 40 Discs/h (quality mode). Print Direction : Bidirectional, Unidirectional. Printing Resolution : 1.440 DPI x 720 DPI (fast mode), 1.440 DPI (quality mode). Interface : USB 2.0 Type B. Required IT environment : • Operating Systems : Windows Vista SP1, Ultimate, Home Premium, Home Basic, Business, Enterprise, Windows XP SP2 or later Home, Professional Edition, Windows 2000 SP4 or later Professional Edition. • Hard Disk Drive : 100 GB minimum with any operating systems”