By 
If you are looking for a cost-effective and efficient printer to help you with your various printing jobs, then the Samsung ML-4551NR is something you should consider. It’s good for your home or commercial printing requirements. ML-4551NR is a monochrome laser printer with incredible speed. The increased performance and functionality of this model is the number one reason why you should have it in your office or business. It is more powerful than any other printer offering invaluable features and functions.
The Samsung ML-4551NR can provide numerous professional solutions with an optional hard drive (additional parts for expansion such as network cards, second cassette and duplex unit) – memory: 128 MB, 256 MB; duplex drive 40 GB hard drive. It has a surprisingly high input capacity with three optional cassette trays: 3 x 500 sheets. Has a maximum capacity and paper input tray type of 500-sheet cassette tray and 100-sheet MP tray
This easy-to-use printer has a 500 MHz CPU that is capable of delivering optimum performance at all times. It has expandable system memory, from 128 MB to 512 MB DDR. The combination of high memory and a powerful microprocessor ensures that printing demands are met even in your hectic schedule.
Designed to handle multiple print jobs, the Samsung ML 4551NR has print speeds of 43ppm for A4 and 45ppm for Letter. With a time to first print (mono) of 8.5 seconds (from ready), it has an effective output resolution of up to 1200 x 1200 dpi. This printer has a monthly duty cycle (maximum number of printed pages per month that a printer can produce) of 150,000 sheets. It is capable of duplex printing: printing on both sides of a document. It can also print complex documents, such as images, at a faster rate and is capable of enlarging or reducing a document.
The Samsung ML-4551NR supports a wide range of operating systems and interfaces, making it one of the most versatile and adaptable printers on the market. It works well with just about every software platform you use, be it Windows, Mac, or Linux. This computer supports wired and parallel network and USB 2.0 ports.
The ML-4551NR also offers many highly efficient and time-saving features such as: delayed printing, collation, barcode printing and much more. You can also be sure that your documents are protected even if your computer is connected to a network system. You can enjoy professional results on every print job with the Samsung ML-4551NR.