Lexmark C540X34G Yellow Developer Unit for C54X Printer<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> For use in Lexmark C540DW， C540n， C543dn， C544dn， C544dtn， C544DW， C544n </span></li><li><span class="a-list-item"> Works in 546Dtn， X543DN， X544DN， x544dtn， X544DW， X544N </span></li><li><span class="a-list-item"> Also compatible with x546dtn， x548de， x548dte </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51PWNsg7dVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31HZFGGTPOL.jpg" noproxy>