HP C9121A Q9121A Q7709A Q7709AX 128MB 100 pin PC100 MEMORY DIMM for HP Color LaserJet 2800 all-in-one 2820 2840 Printer<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" 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"> One 128MB PC100 100-pin sodimm </span></li><li><span class="a-list-item"> Part#: C9121A， Q9121A， Q7709A </span></li><li><span class="a-list-item"> 100% compatible with lifetime replacement warranty </span></li><li><span class="a-list-item"> Manufactured by Keystron， LLC </span></li><li><span class="a-list-item"> Keystron is a registered trademark of Keystron， LLC </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/4106AgFW0IL.jpg" noproxy>