HP LaserJet Enterprise 600 M602dn: automatic duplex for a wired queue review

The M602 package for automatic two-sided office documents

The HP LaserJet Enterprise 600 M602dn fits a prepared commercial computer queue that needs automatic two-sided monochrome documents and temporary PIN release. It includes the duplex accessory, Gigabit Ethernet and a USB computer connection. Its ordinary input remains 600 sheets; choosing dn does not add the extra paper tray supplied with M602x.

HP's exact US page identifies CE992A#BGJ and marks it discontinued. The actual original configuration table confirms that CE992A adds automatic duplex to the M602n equipment. This is an earlier assessment of the documented US low-voltage edition, without a stock, condition or current-driver guarantee. HP specifies commercial Class A use.

Configure the duplex job before leaving it unattended

The original size table positively supports automatic duplex for Letter, Legal and A4. The ordinary duplex-media range is 60–120 g/m². In the compatible Windows driver, use Finishing and Print on both sides, with the correct size/type. The documented Mac route instead selects the binding under Two-Sided.

The rear output must be closed. Opening it directs sheets face up through the straighter route and makes the duplexer unavailable. That explains why leaving the printer in an envelope configuration can interrupt an otherwise supported two-sided routine. The front input's acceptance of labels or envelopes does not make them automatic-duplex media.

For duplex letterhead without an optional finishing unit, the front input uses face down with the bottom entering first. The lower input uses face up with its bottom edge toward the tray front. Check the real binding and orientation with the chosen document; instructions for a fitted stapler are a separate arrangement.

Count the supplied inputs rather than an expanded maximum

The supplied inputs are a front 100 and lower 500, totaling 600 ordinary sheets at the original 20-lb/75-g/m² basis. Both actual size columns support Letter, Legal and A4. Full capacity for one size assumes both inputs contain it; mixed paper divides the count, and heavier stock reduces the actual stack.

Adjust the lower tray's side and rear guides, keep the stack flat below the height indicators and slide the tray fully home. Extend the front support and keep paper below its tabs. Do not fan or load during printing. Accept or correct the panel's size/type prompt so that it matches the job rather than leaving an unintended Any Size/Any Type front-tray selection.

The reviewed lower-media limit uses the exact US 120 g/m² rather than a generic guide table's 135. Extra inputs and the 75-envelope feeder are optional. The normal front input holds up to ten suitable envelopes face up, short postage edge leading into the printer, with the rear output open and extended.

Use each USB connection for its documented purpose

A compatible computer can connect over included Gigabit Ethernet or the rear Hi-Speed USB 2.0 interface. For Ethernet, the original setup uses the address on the Embedded Jetdirect configuration page. For USB, use an appropriate A-to-B cable, with the original recommendation of at most two meters, and connect when the installer prompts. Check current host compatibility separately from the historical software list.

The front walk-up host socket is different. The original lists PDF, PRN, PCL, PS and CHT files and warns that not every storage accessory is recognized. That feature does not establish scanning to USB or support for every file. The numeric keypad and hardware integration pocket also do not include an optional card reader or added software solution.

Release a temporary job with the actual PIN procedure

Choose Personal Job in the compatible driver's Job Storage tab, then PIN to print and a four-digit code. At the device, Retrieve Job from Device Memory selects the user and job and requests the PIN before printing. The original procedure positively supports that temporary feature without relying on an encrypted disk package.

Personal jobs delete after printing and at power-off. Same-name work can replace an earlier job, while limited space can remove older jobs. Quick Copy and permanent Stored Job have separate optional-hard-disk conditions. A product-page storage field does not change this review into a promise of encryption, indefinite retention or permanent archiving.

Keep network mobile printing separate from USB desktop work

The actual guide documents network AirPrint, with a possible firmware update, and the exact dn record lists Mopria certification. Connect the printer to Ethernet and use a compatible phone or tablet on the same reachable local network through an access point. The printer does not need a wireless card for that arrangement.

USB desktop printing alone does not provide AirPrint or Mopria. Mobile paper sizes, capacity, automatic duplex and PIN behavior were not independently established for the separate mobile route. The computer driver's capabilities are therefore not borrowed. Built-in Wi-Fi and Wi-Fi Direct are also absent from the reviewed normal package.

Match the workload and inspect the physical unit

HP recommends 3,000–15,000 monthly pages, distinct from the 225,000-page maximum duty. Original one-sided speed is up to 52 Letter pages per minute, separately 50 A4. These are declarations, not a new test. The machine includes no scanner, feeder, copier or fax.

Exact US fields list 16.3-by-20-by-15.7-inch dimensions and 57.8 pounds, separating packaging and open dimensions. A generic guide combines n/dn values, so verify the actual assembly and access space. Check its 100–127-V, 50/60-Hz plate and CE390A or CE390X supply; a replacement's declared yield does not establish installed remainder, stock or running cost.