Inside the HP LaserJet Enterprise M604: High-Volume, Low-Hassle Print Solution
The LaserJet Enterprise M604 platform is one of HP’s most trusted monochrome engines: 52 ppm of crisp, 1,200 dpi output, a steel frame built to shoulder up to 175,000 pages per month, and firmware that IT teams still praise for rock-solid reliability. Whether you pick the M604n or the M604dn, you’re getting the same powerful foundation; the letter on the end only tweaks how the printer fits into your workflow.
Key Features of the HP LaserJet M604
Rapid 52-PPM Performance
The M604’s print engine delivers up to 52 pages per minute and produces the first page in about 7.5 seconds, keeping even high-volume teams moving without delay.
Large-Scale Duty & Capacity
Built for sustained workloads, it supports a 175,000-page monthly duty cycle and can be outfitted with trays for up to 3,600 sheets, so refills are rare.
Built-In Enterprise Security
Enterprise-class safeguards—including PIN-protected job release, IPsec/SSL encryption, and an optional AES-encrypted hard disk—come standard to meet strict security and compliance needs.
Future-Ready Connectivity
Flexible workflow is assured through Gigabit Ethernet, driver-free mobile printing protocols, and a Hardware Integration Pocket that accepts wireless, NFC, or badge-reader modules for easy future expansion.
Technical Specifications Overview
The M604 engine pushes out up to 52 ppm (Letter) and wakes fast, delivering the first page in about 7.5 seconds, so even long print queues clear quickly.
Each model ships with a 100-sheet multipurpose tray and a 500-sheet main tray, yet the chassis is pre-drilled for extra feeders or a 1,500-sheet high-capacity unit—letting you scale to 3,600 sheets of input for multi-day, unattended runs.
Where they differ is convenience and efficiency: the M604dn includes an automatic duplexer and carries ENERGY STAR® certification, while the network-only M604n leaves duplexing as an add-on and is not ENERGY STAR rated.
Under the hood both share a 1.2 GHz processor, 512 MB RAM (upgradeable to 1.5 GB) and a rugged duty cycle of up to 175,000 pages per month—with HP recommending 5 k-13 k pages for best longevity.
Model Suffix Definitions:- n = network-ready Gigabit Ethernet
- d = built-in duplex (automatic two-sided printing)
Maintenance & Supplies
Keep your printer running at peak performance with:
- Fuser Unit: The fuser unit (Part Numbers: E6B67-67901, E6B67-69001, E6B67-69003, RM2-6308, RM2-6342) bonds toner to paper using heat and pressure for lasting prints.
- Transfer Roller: This roller (Part Numbers: B3G84-67901, CB506-67903, CE988-67903, E6B67-67904, RM1-0699-000, RM1-5462, RM1-8491) transfers toner onto paper for clear, consistent images.
- Complete Roller Kit: The kit (Part Numbers: CE988-67904, E6B67-67905, P4014-Z2, Q7491-67903, Q7517-67910, RY7-5215-000CN, RY7-5215-010CN) includes key rollers to improve paper feed and reduce jams.
We carry all these parts at Item, Inc. with fast shipping options.
HP M604 Printer FAQs: What You Need to Know
What replaced HP LaserJet Enterprise M604dn?
HP’s next-generation mono A4 work-group line moved from the M604/605/606 series to the M607/608/609 family, with the M607dn positioned as the direct successor to the M604dn.
How to turn auto duplex off HP M604?
If you remove the duplexer by unscrewing the two screws on the rear cover, the printer automatically disables duplex printing; alternatively, you can turn it off through the control panel by opening Job Settings, selecting 2-Sided Printing, choosing Off, and pressing OK.
Why can’t I print to my HP LaserJet M604 Wi-Fi?
The M604 family is Ethernet-only out of the box; wireless requires an HP Jetdirect 3000w NFC/Wireless Accessory (J8030A). Most “can’t print” cases trace to that accessory or the network. For additional information or help troubleshooting your M604, click here to read our Troubleshooting Manual.
To purchase the Wireless Accessory, click here.
Why Buy Your Refurbished M604 From Item, Inc.?
- Full teardown & rebuild - Each printer is stripped, cleaned, fitted with fresh rollers and a low-page fuser, then tested.
- Carefully Packed and Securely Delivered - Explore our bite-size videos, blogs, and manuals for maintenance tips, part swaps, and firmware updates—plus see how every refurbished M604 is boxed safely and shipped securely.
- Lifetime phone support - Call our technicians any time for setup, firmware, or jam-clearing guidance—free for as long as you own the printer.
Ready to add a proven workhorse to your fleet? Browse our current stock of M604n and M604dn units or request a custom quote—all available with bundled toner and spare maintenance kits to keep your cost-per-page in check.
HP LaserJet Enterprise M604n Laser Printer - MPN: E6B67A, M604N
HP LaserJet Enterprise M604dn Monochrome Laser Printer - MPN: E6B68A, M604DN
Conclusion
With 52-ppm speed, enterprise-grade security, and the stamina to push 175 k pages a month, the HP LaserJet Enterprise M604 series remains a rock-solid choice for departments that print hard and fast. Whether you opt for the network-ready M604n or the duplex-equipped M604dn, you’ll get the same rugged engine, expandable 3,600-sheet capacity, and future-proof connectivity. Pair that hardware with Item, Inc.’s expertly refurbished units—carefully packed and securely delivered—plus our library of service guides, videos, and consumables, and you have a workhorse that will keep your workflows humming for years to come.
Need More Help?
If you need more assistance with sales, repairs, or identifying a part, contact us.