| Title | HP MFP 138fnw (4ZB91A) All-in-One Laser Printer |
| Functionality Type | All-in-One |
| Model No | MFP 138fnw (4ZB91A) |
| Display Specifications | 2 Line LCD |
| Functionality | Copy,Fax,Print,Scan |
| Type | Laser |
| Brand | HP |
| Display | Yes |
| Internal Memory | 128 Mb |
| Printing Method | Laser |
| Printing Output | Color |
| Box Contents | Printer, Accessories, Power Cord, Warranty Card & User Manual |
| Height | 308 mm |
| Weight | 11.5 kgs |
| Width | 406 mm |
| Depth | 359 mm |
| Ethernet Support | Yes |
| USB support | Yes |
| Copier resize | 25,400 % |
| Reduction/Enlargement | 25 to 400% |
| Fax Forwarding | Yes |
| Fax Resolution | 300,300 dpi |
| Fax Transmission Speed | 33.6 |
| Automatic Redial | Yes |
| Modem Speed | 33.6 |
| Memory Capacity | 400 Pages |
| Speed Dials Memory | Yes |
| Print languages, standard | SPL |
| Paper handling standard, input | 150 |
| Paper handling standard, output | Sheetfed |
| Paper tray(s), standard | 1 |
| Supported media | 75 g/m2 |
| Number of Paper Trays | 1 |
| Input tray capacity | 150 Pages |
| Media types | Plain, Thick, Thin, Cotton, Color, Preprinted, Recycled, Labels, CardStock, Bond, Archive, Envelope |
| Print Margin | 5mm - top, bottom, left and right (Envelope: 10mm) |
| Media size supported | A4; A5; A6; envelopes |
| Output tray capacity | 100 pages |
| First page out (black) | 18 Seconds |
| Print Speed | 21 per min |
| Print resolution, black | 1200,1200 dpi |
| Duplex printing | Yes |
| Duty Cycle | 10000 Pages |
| Print speed, black (normal quality mode) | 21 per min |
| Warm up time | 32 Seconds |
| Mobile Printing Capability | Yes |
| Recommended Monthly Print Volume | 100,2000 Pages |
| Scanner Type | Flatbed, ADF |
| Bit depth Colour | 8 bit |
| Scan Resolution | 4800,4800 |
| TWAIN Compliant | Version 1.9 |
| Maximum Scan Area | 216,356 mm |
| Scan Features | Windows Scan SW supports file format: PDF, JPG, TIFF, PNG, BMP |
| Processor speed | 600 MHz |
| Memory | 128 MB |
| Operating System | Microsoft Windows 98SE, NT, 2000, XP, Vistaor Windows 7, Windows 8/8.1/10, MAC OS, NetWare, UNIX or Linux |
| Consumption (active) | 300 Watt |
| Consumption (off) | 0.2 Watt |
| Operating humidity range | 10,80 |
| Operating temperature range | 20,40 Celsius |
| Rated Voltage | 220 V-240 V |
| Rated Frequency | 50 HZ-60 HZ |