Brother HL-4050CDN Laser Printer. Print quality: 2400 x 600 DPI. Print speed: 20 ppm, 33 s, 20 ppm, 17 s, 16 s. Memory: 64 MB, 1x SO-DIMM. Processor: 300 MHz. Memory: 0.576 GB. Input capacity: 250 sheets, 50 sheets. Output capacity: 150 sheets. Media formats: A4, A5, A6, B6, B7. Media weight: 60 – 105 g/m2, 60 – 163 g/m2. Print technology: Laser. Connectivity: IEEE 1284, USB 2.0. Networking: 10/100Base-TX, SSL. System requirements: Windows 2000/XP/2003/Vista Mac OS X 10.2.4 +. Sound emission: 3