Samsung ML-D4550B (MLD4550B) Toner Cartridge SU689A Genuine Black High Yield Toner

Samsung ML-D4550B High Yield from The Print Cartridge Shop, dispatched fast to every Australian state.

With an approximate 20,000-page yield, the genuine Samsung ML-D4550B black toner (SU689A) is a high-capacity cartridge for ML-4050, ML-4550 and ML-4551 series lasers. It suits high-volume offices printing manuals, contracts and reports, cutting downtime from frequent changes while keeping text sharp.

Key details

• Brand: Samsung (genuine)
• Model: ML-D4550B (MLD4550B)
• Part code: SU689A
• Colour: black
• Yield: approx. 20,000 pages (high yield)
• Type: mono laser toner cartridge
• Output: sharp black text with consistent toner distribution

Suits the following printers

Samsung ML-4050 series, ML-4550 series, ML-4551 series

Add the Samsung ML-D4550B High Yield to your cart today and it will be on its way within one to two business days.

If you print often, keeping a spare Samsung ML-D4550B High Yield on hand saves downtime when the current one runs low.

Order the Samsung ML-D4550B High Yield online and we will pack it carefully for delivery to your door.

Every Samsung ML-D4550B High Yield we sell is checked against its listing details before it ships.

Good to know

How many pages is it rated for?
Approximately 20,000 pages at standard coverage. That reduces downtime caused by frequent toner replacements.

Which printers can use it?
Samsung ML-4050, ML-4550 and ML-4551 series laser printers. It is engineered for Samsung monochrome laser printers in this range.

How to install the Samsung ML-D4550B High Yield

1. Open the front or top cover and let the printer cool for a few minutes if it has just been printing.
2. Remove the used cartridge. On printers with a separate drum unit, take out the drum and toner together, then push the lock lever and lift the toner cartridge out of the drum.
3. Unpack the new cartridge and gently rock it side to side five or six times to spread the toner evenly. Remove any protective strip or cover.
4. Slide the cartridge into place (or into the drum unit until it clicks), refit the assembly and close the cover.

Storage and handling

Keep unopened cartridges in their packaging in a cool, dry place and lay them horizontally. If you spill toner, wipe it up with a dry cloth and cold water rather than a vacuum cleaner.

Getting the most from each cartridge

Page yields such as 20,000 pages are measured at about 5% coverage, so pages with heavy graphics will use toner faster. Printing in draft or toner save mode helps your cartridge last longer, and keeping the paper path clean helps avoid smudges.

Delivery, returns and support

Orders are packed within 1–2 business days and sent with tracking to every Australian state for a flat $19.99 delivery fee. Change your mind? Let us know within 30 days of delivery under our returns policy, and faulty items are covered by Australian Consumer Law. Not sure this is the right part for your machine? Send us your printer model and we will confirm before you order.