OEM-Genuine Toshiba Black...Toshiba T-FC25-K ..TFC25K ...Page Yield 27000 ..For: Toshiba E STUDIO 2040C ... Toshiba E STUDIO 2540C ... Toshiba E STUDIO 3040C ... Toshiba E STUDIO 3540C ... Toshiba E STUDIO 4540C ... Also see: TFC25C,TFC25Y,TFC25M,TFC25K