I bought these printer cartridges to replace 3rd party toner cartridges that are already in my Brother HL-L3230CDW printer. I've been using it for a couple of weeks now and I'm very happy with it. Here's why: Pros ----- * Print quality is identical to Brother OEM cartridges and other 3rd party toner cartridges I have tested. I photographed the Windows test pages with the Brother OEM cartridge on the left and the Mirho cartridge on the right. I don't see any difference in quality.* Quick and easy installation. These Mirho cartridges install in the same way as Brother OEM toner cartridges and are fitted with a small microchip to make them work. Some toner cartridges don't, so be aware.* The packaging provides enough cushioning for shipping, but doesn't take up too much space. This is handy for keeping extra cartridges in a cupboard or closet so you don't have to panic and run to the store if you run out of toner while you're printing something important.* Comes with basic setup instructions. Most third-party toner cartridges don't do this, so finding it at the bottom of the box was a pleasant surprise. Bought, they don't last as long as advertised. However, they are still much cheaper than Brother OEM toner cartridges. I will update this review if it turns out to be true.Tips/Tips------* I work in IT and have only used Brother printers at home for the last twenty years because they are extremely durable and print well with almost all third-party toner cartridges. This makes them a lot cheaper over time as the cost of a single toner cartridge can be up to half the cost of a brand new printer.* If you're having trouble installing new toner cartridges, visit YouTube. There will almost certainly be at least one - and possibly more than one - video showing exactly how to do this. YouTube is a GREAT tool for learning all sorts of new skills.* Update your printer firmware. Firmware updates often fix major problems with printers and I have never seen a Brother firmware update cause problems.* Keep chips away from old toner cartridges in case third party toner cartridges you buy later don't come with them . . They are very easy to move between cartridges. I can't post a link here, but a quick YouTube search will find simple instructions on how to do it.
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