DESC: Samsung SCX4521F Laser printer and colour scanner, with 16MB System memory, Prints 20ppm in Black, Scan images at a resolution of up to 600 x 600 dpi (Max. 4,800 x 4,800 dpi enhanced), Copy up to 20ppm, Fax speed: 33.6Kbps, 2MB Fax Memeory, 150 sheet paper tray, USB 1.1 (Compatible with USB2.0), Parallel, OS Compatibility: Windows 98/Me/NT4.0 /2000 /XP. Various Linux OS (via USB interface only) including Red Hat 8.0~9.0, Fedora Core 1~3, Mandrake 9.0~10.2, and SuSE 8.2~9.2. Mac. 10.3.