B4550 Series

SKU: B4550 Series (Oki)

Big value and performance in a small printer

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  • Energy Star® compliant Clear, crisp 600 x 2400 dpi output
  • Up to 7,000-page toner capacity
  • As fast as 24 ppm print speed; 5.0-second time to first page**
  • Energy Star® compliant Clear, crisp 600 x 2400 dpi output
  • Separate toner and image drum configuration for lower operating costs
  • Compatible with Windows® Vista™, XP, 2003, 2000 and Windows NT® 4.0; Mac® OS 9.1/10.2 and higher
  • 266 MHz PowerPC processor
  • Upgradable to 288 MB memory1
  • Standard USB and parallel ports; available with internal or external print servers and serial connectivity
  • Up to 7,000-page toner capacity2
  • Fully-enclosed 250-sheet paper tray to keep paper clean and free from curling
  • Optional 500-sheet 2nd paper tray
  • 1-Year limited warranty with Overnight Exchange3; 5-Year limited printhead warranty
  • Live, toll-free technical support 24x7x3653


  • A compact, durable design with fast speed, a high duty cycle, low total cost of ownership, and Energy Star® compliance
  • B4500/B4550 Series printers from OKI Printing Solutions are built for efficiency and speed, with expandability to meet your future needs. If you’re looking to improve the productivity and lower the operating costs of your business, B4500/B4550 Series Digital monochrome printers are made for you. All models in the series deliver up to 24 ppm, with the first page printing in as little as 5.0 seconds.1
  • They produce black & white output that’s clear and crisp in 600 x 2400 dpi resolution, using a twopiece consumables system for long-lasting, highquality performance and a low cost of operation. For fewer user interventions, each has a 250-sheet standard paper capacity housed in a fully enclosed Letter/Legal/Universal tray, and can be outfitted to hold up to 750 sheets with an optional 500-sheet 2nd paper tray. In terms of durability, B4500/B4550 Series printers are tough and reliable—with a monthly duty cycle of 40,000 pages. Plus, all models have earned the Energy Star® from the U.S. Environmental Protection Agency.
  • Fit for any work environment – B4500/B4550 Series printers, with their compact size and stylish lines, fit just about anywhere, especially where space is tight.
  • All have PCL® 5e and PCL 6 emulation. They perform equally well with the most popular Windows® operating systems, and Mac® Classic OS 9.1 and OS X 10.2 and higher.
  • With USB and parallel interfaces, these printers offer broad-based connectivity. And, equipped with an optional OkiLAN® print server, they make network printing affordable—which translates into a much lower cost per user, a vital consideration as your office network grows.
  • Backed by unmatched support. OKI Printing Solutions is so confident in the reliability and performance of the B4500/B4550 Series that we provide an industry-leading 5-year printhead warranty and a 1-year limited printer warranty with Overnight Exchange.

Product Specifications

SKU* 62429601 62429604
Printing Performance
Mono Print Speed (ppm)** 24 24
Print Resolution (dpi) 600 x 2400 600 x 2400
Duty Cycle (pages per month) 40,000 40,000
Processor (MHz) 266 266
Microprocessor Type 32 bit PowerPC 32 bit PowerPC
Time To First Page (seconds) 5.0 5.0
Standard Memory (MB) 32 32
Maximum Memory (MB) 288 288
Duplexing N/A N/A
Compatibility Emulations: PCL® 5e, PCL 6; IBM® ProPrinter® III XL; Epson® FX; optional PostScript® 3™ emulation available Operating Systems: Windows® Vista™/Vista x64, XP (Home Edition, Professional/x64 Edition); 2003 Server/x64 Edition, Enterprise Server/x64 Edition, Data Center Server/x64 Edition; 2000 Workstation, Professional, Server, Advanced Server – SP4 or later; NT® 4.0 Workstation, Server – SP6 or later; ME; 98/98 SE; Mac® OS 9.1/OS 10.2 and higher
Fonts and Bar Codes
Resident Fonts Scalable Fonts: 87 PCL fonts; 136 PostScript fonts(requires optional PostScript emulation) PCL Bitmap Fonts: Line Printer; OCR-A/B; USPS ZIP Bar code
Interfaces / Connectivity
Standard Interfaces Connectivity: Universal Serial Bus (USB v2.0) and IEEE 1284 bi-directional parallel standard Connectivity: Universal Serial Bus (USB v2.0) and IEEE 1284 bi-directional parallel standard; Ethernet via OkiLAN internal or external print server card
Optional Interfaces Ethernet via OkiLAN internal or external print server card; RS-232C serial interface RS-232C serial interface
Network- ready Optional Standard
Paper Handling
Standard Paper Capacity (sheets) 250 250
Maximum Paper Capacity (sheets) 750 750
Operating / Physical Specifications
Dimensions W/out Box (W x D x H) (inches/cm) 14 x 15.6 x 8.5 (35.5 x 39.6 x 21.6 ) 14 x 15.6 x 8.5 (35.5 x 39.6 x 21.6 )
Weight Without Box (lb. / kg) 22 / 10 22 / 10
Warranty Printer:1-Year limited warranty on parts and labor with Overnight Exchange5; 5-Year limited LED printhead warranty