HP 3-in-1 Monochrome Multifunction Laser Printer, Model No. MFP 135A. System Specifications: Processor: 600 MHz. Memory (Max): 128 MB RAM. Connectivity: High-Speed USB 2.0. Compatibility: Supported Operating Systems: Windows and Mac. Media Handling: Input Tray: 150-sheet capacity. Supported Media Sizes: A4, A5, A5 (LEF), B5 (JIS). Output Bin: 100-sheet capacity. Duty Cycle: Monthly Duty Cycle: Up to 10,000 pages/month. Recommended Print Volume: 100 to 2,000 pages/month. Specifications: Functions: Print, Copy, Scan. Technology: Multifunction Laser Printer.