Printer Type Workgroup printer – laser – B/W
Weight 8.22 kg
Localisation English, German, French, Italian, Spanish / Europe
Media Size Class A4/Legal
Max Media Size Legal (216 x 356 mm), A4 (210 x 297 mm)
Min Media Size (Custom) 76 mm x 127 mm

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Printer TypeWorkgroup printer – laser – B/W
Weight8.22 kg
LocalisationEnglish, German, French, Italian, Spanish / Europe
Media Size ClassA4/Legal
Max Media SizeLegal (216 x 356 mm), A4 (210 x 297 mm)
Min Media Size (Custom)76 mm x 127 mm
Max Media Size (Custom)216 mm x 356 mm
Print SpeedUp to 35 ppm – B/W – A4 (210 x 297 mm)
Max Resolution (B&W)4800 x 600 dpi
Image Enhancement TechnologyHP ProRes 1200 / HP FastRes 1200
InterfaceUSB 2.0
Processor1.2 GHz
RAM Installed (Max)256 MB (256 MB)
Flash Memory Installed (Max)256 MB (256 MB)
Language SimulationPCL 5C, PostScript 3, PCL 6, PDF, URF, PWG
Media TypeEnvelopes, labels, plain paper, photo paper
Total Media Capacity350 sheets
Media Handling250-sheet input tray, 100-sheet input tray
Monthly Duty Cycle (max)80000 pages
Recommended Monthly Volume750 – 4000 pages
Printer FeaturesAuto Power On, Auto Power Off
PowerAC 230V
System RequirementsMicrosoft Windows 7, Windows 8, Windows 8.1, Windows 10 (32/64 bits), Apple macOS 10.12, Apple macOS 10.13, Apple macOS 10.14
Manufacturer Warranty1-year warranty
Dimensions (WxDxH)38.1 cm x 35.7 cm x 21.6 cm

Key Specifications






Print Speed

Up to 35 ppm

Network Ready


Product overview

Winning in business means working smarter. The HP LaserJet Pro M304a printer is designed to let you focus your time where it’s most effective – helping to grow your business and staying ahead of the competition.
Dynamic security enabled printer
Certain HP printers are intended to work only with cartridges that have a new or reused HP chip or electronic circuitry. These printers use dynamic security measures to block cartridges using a non-HP chip or electronic circuitry. Periodic firmware updates will maintain the effectiveness of these measures and block cartridges that previously worked. Reused HP chips and electronic circuitry enable the use of reused, remanufactured, and refilled cartridges.

Built to keep you – and your business – moving forward

Today’s businesses are always on, and always connected. Choose a printer that can keep up with how you actually work, collaborate, and get things done

Simply designed to uncomplicate your day

Set up this printer fast and easily manage device settings to help increase overall printing efficiency.

Sustainability is smart business

Avoid frustrating reprints, wasted supplies, and service calls using Original HP toner cartridges.

Key Features

First page out

First page out

First page out black (A4, ready): As fast as 6.9 sec

Original HP Cartridges

  • CF259A HP 59A Black LaserJet Toner Cartridge (3,000 pages), CF259X HP 59X Black LaserJet Toner Cartridge (10,000 pages)

In the box

What’s in the box

  • HP LaserJet Pro M304a
  • Preinstalled HP 59A Black LaserJet Toner Cartridge (yield 1,500 pages)
  • Getting started guide
  • Support flyer
  • Warranty guide
  • Regulatory flyer
  • Power cord


  • No, please purchase USB cable separately


Print speed black (ISO, A4) Up to 35 ppm 
First page out black (A4, ready) As fast as 6.9 sec 
Duty cycle (monthly, A4) Up to 80,000 pages 
Recommended monthly page volume 750 to 4,000 
Print technology Laser 
Print quality black (best) Fine Lines (1200 x 1200 dpi) 
Display 2-line backlit LCD graphic display 
Wireless capability No 
Connectivity, standard 1 Hi-Speed USB 2.0 
Compatible Operating Systems Windows Client OS (32/64 bit), Win10, Win8.1, Win 8 Basic, Win8 Pro, Win8 Enterprise, Win8 Enterprise N, Win7 Starter Edition SP1, UPD Win7 Ultimate, Mobile OS, iOS, Android, Mac, Apple® macOS Sierra v10.12, Apple® macOS High Sierra v10.13, Apple® macOS Mojave v10.14, Discrete PCL6 Printer Driver, For more information on the supported operating systems go to, Enter your product name and search, Click on User Guides and enter your product name and search for User Guide, Search for your (Product Name) – User Guide, Search for the Supported Operating Systems section, UPD PCL6 / PS Printer Drivers, Supported Operating systems, For more information on the supported operating systems see 
Memory 256 MB 
Maximum Memory 256 MB DRAM
256 MB Flash 
Internal Storage None 
Paper handling input, standard 100 sheet multipurpose Tray 1, 250 sheet input Tray 2 
Paper handling input, optional Optional third 550 sheet tray 
Paper handling output, standard 150 sheet output bin 
Duplex printing Manual (driver support provided) 
Finished output handling Sheetfeed 
Media sizes supported Tray 1, Tray 2: A4
B5 (JIS)
B6 (JIS)
16K (195 x 270 mm, 184 x 260 mm, 197 x 273 mm)
10 x 15 cm
Oficio (216 x 340 mm)
postcards (JIS single, JIS double)
envelopes (DL, C5, B5)
Optional Tray 3: A4 
Media types Paper (plain, EcoFFICIENT, light, heavy, bond, coloured, preprinted, prepunched, recycled, rough)
Blue Angel compliant No, please refer to the ECI (Ecolabel Comparison Information) document 
Sustainable impact specifications Mercury-free 
Operating temperature range 10 to 32.5°C 
Recommended operating humidity range 30 to 70% RH 
Minimum dimensions (W x D x H) 381 x 357 x 216 mm 
Maximum dimensions (W x D x H) 381 x 634 x 241 mm 
Weight 8.22 kg 
Manufacturer Warranty One-year Bench/Depot Repair warranty. Warranty and support options vary by product, country and local legal requirements. Contact your Contractual Vendor or go to to learn about HP award winning service and support options in your region. 

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