This is the second time I have ordered this cartridge. Unfortunately the second one did not work and I contacted customer support. I received a message that the device will be replaced. This is really good customer service and I will continue to give you my business. Here's a photo of the fault message I receive when I power up my laptop showing there is a printer cartridge problem

Great to know that you can depend on having a product that truly lasts long. I have already put a double order through to have the toner cartridges in my inventory... Once the present cartridge ends I will place another order... Hard to find well prices supplies when you need them... I have gotten behind in my work due to products OUT OF STOCK... NOW that I have found this Moustache product that is dependable and its performance is ultimate.. I will praise and recommend it 100%

Received quickly and worked as advertised.

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second purchase of this product, will purchase again

So happy with this toner! Fantastic price and fantastic product. Highly recommend!