Printing Speed • Up to 30 ppm in A4 (31 ppm in Letter) Printing Resolution • Optical : 600 x 600 dpi • Enhanced : 4,800 x 600 dpi effective Processor • 600 MHz Printer Language (Emulation) • SPL / PCL5e / PCL6 Memory • DDR3 128 MB Interface • Hi-Speed USB 2.0 • Ethernet 10/100 Base TX Interface • 802.11b/g/n wireless LAN (Only SL-M3015DW) • NFC printing (Only SL-M3015DW) Control Panel • No LCD, 4 keys and LEDs Toner cartridge yield • Initial : Approx. 700 pages • Standard / High yield : Approx. 1,200 pages / 4,000 pages