Producto original de gran calidad, lo que deben mejorar son los tiempos de envio. ademas hice una compra por 04 impresoras y la rechazaron sin explicacion alguna.The printer works on Mac and Windows, but it's a little quirky to get working through no fault of the printer. On the mac you have to manually set it up as Epson 9 pin. For windows, it includes a driver disk. You then need to set the highest resolution in the printer settings advanced options. I had no problem getting it printing on the mac, but found if I printed directly from chrome, the quality was terrible..not readable. If I printed directly from a web browser on windows, the print was garbed and page size completely wrong, even WORSE than on the mac.This has nothing to do with the printer and everything to do with the applications.Saving an image to the desktop and printing with the system dialog showed much better quality for both mac and windows.Printing plain text directly to the printer (bypassing the device) using lp -o raw filename.txt shows that the print quality is actually very good.Printing from applications such as notepad or textedit worked fine and the text was crisp and clear.So there are some issues with some applications which prevent it from printing as well as it could. To be fair it's not claimed to be supported on the mac, so I am happy just to be able to print to it. I print a lot of code, manuals, etc and don't want to waste toner on my laser printer for temporary printouts.For printing large amounts of data cheaply which doesn't need to look pretty you can't beat a dot matrix.Attached is a photo of raw text printing using lp -o raw filename.txt and also a photo of the same text formatted by the print driver using lp filename.txt.You can see the raw print is much smaller and sharper.MacOS CatalinaI was looking for a lower-cost replacement to my previous inkjet printer, and at around $5 per ribbon, these are far cheaper to operate than laser or inkjet printers, and the ribbons last for over 1,000 pages. The print quality is what you'd expect from a 9-pin dot matrix. It works fine if you're printing text or simple graphics. It's noisy, which is typical of any dot matrix printer, but prints faster than I expected, even on the highest quality setting. Despite Epson saying it doesn't work with the Mac, it does! You have to manually add it and select the "Epson 9-pin Series" driver, which works perfectly. You're even able to select between the 3 different print qualities, though I wouldn't recommend using anything other than the highest quality, 240x72, because text starts to become unreadable.So far, it's been a great compact printer! I'm happy to no longer be overpaying for expensive toner and ink cartridges.muy bueno el productoI purchased this item on September 1 2021. On November 1st the product quit working. I called about warranty and was told it had a two year warranty. Had to call and they tell me I have to send to a repair service center and the closest one to me is 100 miles away. Called them and was told I would need to mail the printer to them me paying for the shipping and also paying a $50.00 charge for them to look at printer and determine if it is under warranty. If it is determined to be under warranty they will reimburse me my shipping and $50.00. So not only am I out the money I paid for the printer I have to pay shipping and $50.00 until they decide to reimburse me and also the time that it takes to get repaired. I believe that I am loosing all the way around. Who is going to pay me for the downtime and my expense for gas and travel so send this to a service center?GoodFor the money, for a 9-pin, the print quality is fine. I've been using inkjet printers for years and years and always hated them. The expensive ink cartridges that never last and dry up drove me crazy. So nice to have a ribbon printer again. I feel liberated by this little dot matrix printer. See the video I uploaded. The tractor feed mechanism is fine. Seems to be a good little printer.It actually works very well .. and we use it a lot .. gonna get another one .. cause my other one is 40 years old .