Much cheaper than the original. Came quickly, as well as the manual of oki (to the printer) suboptimal. Small problem: Removing the cartridge prevents the replacement of the toner cartridge. After traveling in the printer replaceable in seconds, but: the cover is not about, right front to 5 mm, the B431dn. From because of compatibility !!! A small sticker on the tab, which triggers the contact has eliminated the problem. Whether the printer by dust but I do not know yet. Not even if the promised number of pages ranges. The printed result first test sites are fully okay.
