The two printers
Both printers share one A3 black and white body, to the point that OKI illustrates them with identical drawings. The B820n runs at 35 pages a minute. The ES8140dn, the Executive Series version, is quicker at 40 and prints both sides of the sheet. OKI's guidance is to stay within 20,000 pages a month; the most it rates them for is 100,000.
The ES8140 came off sale first, in March 2021, and is supported to 31 March 2028. The B820 followed in October 2021, with support running to 31 October 2028.
