Your search for "brother tn315" revealed the following:

Compatible Toner Cartridge Replacement for Brother TN315 TN-315 TN315BK TN310 to use with HL-4150CDN MFC-9460CDN MFC-9970CDW HL-4570CDW MFC-9560CDW (1 Black, 1 Cyan, 1 Magenta, 1 Yellow)

Compatible Toner Cartridge Replacement for Brother TN227 TN-227 TN227bk TN223 fit for HL-L3210CW HL-L3230CDW HL-L3270CDW HL-L3290CDW MFC-L3710CW MFC-L3750CDW MFC-L3770CDW Printer (4 Pack)

Compatible Toner Cartridge Replacement for Brother TN221 to use with MFC-9330CDW DCP-9020CDN HL-3170CDW HL-3140CW HL-3180CDW MFC-9130CW MFC-9340CDW Color Laser Printer (2 Black)

Compatible Toner Cartridge Replacement for Brother TN221 TN225 to use with MFC-9130CW HL-3170CDW MFC-9340CDW HL-3140CW HL-3180CDW MFC-9330CDW Printer (2 Black, 1 Cyan, 1 Magenta, 1 Yellow)

GPC Image Toner Cartridge Compatible for Brother TN336 TN-336 TN-331 TN331 to use with MFC-L8850CDW HL-L8350CDW MFC-L8600CDW HL-L8250CDN HL-L8350CDWT Printer (Black, Cyan, Magenta, Yellow)

GPC Image Compatible Toner Cartridge Replacement for Brother TN221 TN225 Compatible with MFC-9130CW MFC-9340CDW MFC-9330CDW HL-3170CDW HL-3140CW Printer Tray (2 Black,1 Cyan,1 Magenta,1 Yellow)

Compatible Toner Cartridge Replacement for Brother TN450 TN-450 TN420 to use with HL-2270DW HL-2280DW HL-2240 MFC-7360N DCP-7065DN MFC7860DW Intellifax 2840 2940 Printer (2-Black)

GPC Image Compatible Toner Cartridge Replacement for Brother TN450 TN-450 TN420 to use with HL-2270DW HL-2280DW MFC-7360N MFC-7860DW HL-2240 IntelliFax 2840 Printer Tray (4 Black)

GPC Image Compatible Toner Cartridge Replacement for Brother TN433 TN 433 Compatible with HL-L8360CDW MFC-L8900CDW HL-L8360CDWT HL-L8260CDW MFCL8610CDW MFCL9570CDW Printer (4 Pack)

Compatible Toner Cartridge Replacement for Brother TN-450 TN450 TN420 to use with HL-2270DW HL-2280DW MFC-7360N MFC-7360N MFC-7860DW DCP-7065DN IntelliFax 2840 2940 Printer (4 Black)

GPC Image Compatible Toner Cartridge Replacement for Brother TN-450 TN450 TN420 to use with HL-2270DW HL-2280DW HL-2240 MF7860DW MFC-7360N DCP-7065DN MFC7860DW Intellifax 2840 2940 Printer (2-Black)

Compatible Ink Cartridge Replacement for Brother LC203 LC203XL to use with MFC-J480DW MFC-J880DW MFC-J460DW MFC-J680DW MFC-J885DW J4420DW J485DW (4 Black,2 Cyan,2 Magenta,2 Yellow) 10-Pack

GPC Image Compatible Ink Cartridge Replacement for Brother LC203XL LC203 to use with MFC-J480DW MFC-J680DW MFC-J880DWMFC-J485DW MFC-J4620DW MFCJ5720DW (4 Black, 2 Cyan, 2 Magenta, 2 Yellow, 10-Pack)