These products are guaranteed to work with your Lexmark Optra W810 printer.
Lexmark-optra-w810 is a desktop monochrome laser printer of 22.2 x 23.6 x 27.2 in. dimensions. It can print up to a maximum of 35 ppm A4 black. It occupies less space and has reduced level of operating noise. It produces a 1200 image quality with 300 x 300 dpi, 600 x 600 dpi resolutions and has a duty cycle of about 150000 pages per month. Good printing speed with first page taking only 9.5 seconds.