| key specs |
| Printing Method | Laser | Laser |
| Printing Output | Monochrome | Monochrome |
| Functions | Print | - |
| Printer Type | Single Function | Single Function |
| Connectivity | - | Wireless, USB |
| general |
| Brand | HP | Canon |
| Model | 303D Laser Single Function Monochrome Printer | imageCLASS LBP121dn Laser Single Function Monochrome Printer |
| Printing Method | Laser | Laser |
| Printer Type | Single Function | Single Function |
| Model Name | 303D | imageCLASS LBP121dn |
| Printing Output | Monochrome | Monochrome |
| Functions | Print | - |
| Refill Type | Toner Cartridge | Toner Cartridge |
| Ideal Usage | Ideal for both low & high-volume printing | Home & Small Office |
| Color | Black | Black |
| Display | - | 5.3cm (5-Line) LCD |
| print |
| Max Print Resolution (Mono) | Up to 1,200 x 1,200 dpi | 600 x 600 dpi |
| Print Speed Mono | upto 30 ppm | - |
| Max Print Resolution (Colour) | - | 600 x 600 dpi |
| paper handling |
| Output Tray Capacity | Up to 100 | 50 sheets |
| Input Tray Capacity | Up to 250 | 150 sheets |
| Media Types Supported | Plain, Thick, Thin, Cotton, Colored, Pre-Printed, Recycled,Label, Cardstock, Bond, Archive, Thicker | - |
| Media Size Supported | A4, A5, A5 (LEF), B5 (JIS), oficio, envelopes (DL, C5) | - |
| dimensions and weight |
| Height | 20.2 cm | 21.3 cm |
| Width | 36.8 cm | 35.6 cm |
| Depth | 33.4 cm | 28.3 cm |
| Weight | - | 5.6 kg |
| compatible inks or toners |
| Compatible Black Cartridge | HP 181A Black Original Laser Toner Cartridge (W1810A); HP 181X Black Original Laser Toner Cartridge (W1810X); HP 181A Black Original Laser Imaging Drum (W1816A) | Cartridge 071H : 2,500 prints |
| Compatible Colour Cartridge | - | Cartridge 071: 1,200 prints (Bundled: 700 pages) |
| power and operating requirements |
| Power Consumption (Active) | 445W | 530 W (maximum 1,300 W) |
| Operating Temperature Range | - | 10 - 30°C |
| Operating Humidity Range | - | 20 - 80% RH (no condensation) |
| Power Consumption (Standby) | - | 3.5 W |
| connectivity |
| Wireless Support | - | Yes |
| USB Support | - | USB 2.0 High Speed, 10Base-T/100Base-TX |