Brother MX-4000. Type: Feed module, Device compatibility: Laser/LED printer, Brand compatibility: Brother, Compatibility: HL-L6400DW, Product color: GrayBrother MX4000 Mailbox for HL-L6300DW / HL-L6400DW - 4 x 100 sheets or 2 x 200 sSKU: 4977766758499€426.00PriceOut of StockWarranty24Brand NameBrotherPart NumberMX4000