Speed • M332x series : Up to 33 ppm in A4 (35 ppm in Letter) • M382x series : Up to 38 ppm in A4 (40 ppm in Letter) • M402x series : Up to 40 ppm in A4 (42 ppm in Letter) Processor • 600 MHz (M332x series / M382x series / M402xND) • 600 MHz + 1GHz (M402xNX) Printer Languages • PostScript3, PCL6/5e, IBM ProPrinter, EPSON, SPL Memory (Std / Max) • M332xND / M382xD : 128 MB / 128 MB • M382xND/DW : 128 MB / 512 MB • M402xND : 256 MB / 512 MB • M402xNX : 1GB / 1GB Interfaces • High-Speed USB 2.0 • Wired Network • M382xD : Not Support • M332xND, M382xND, M382xDW : Ethernet 10/100 Base Tx • M402xND, M402xNX : Ethernet 10/100/1G Base Tx • Wireless Network • M382xDW Only : 802.11b/g/n Consumables • Integrated Toner System : M3320ND / M3820D/ M3820ND / M3820DW / M4020ND / M4020NX • Separated Toner System : M3325ND / M3825D/ M3825ND / M3825DW / M4025ND / M4025NX