The OKI B2540 MFP uses black toner, part number 56120401. This compatible toner is a standard-capacity cartridge that replaces the OKI 56120401 and prints about 4,000 pages. The same toner also fits the OKI B2500 MFP and B2520 MFP. Same-day shipping on most orders.
Reg Price $92.99
$59.99
1.5¢ per page