The U.S. Consumer Product Safety Commission, in cooperation with the firm named below, today announced a voluntary recall of the following consumer product. Consumers should stop using recalled products immediately unless otherwise instructed. It is illegal to resell or attempt to resell a recalled consumer product.Lenovo ThinkCentre M70z and M90z computersAbout 50,500Lenovo, of Morrisville, N.C.A defect in an internal component in the power supply can overheat and pose a fire hazard.The firm received reports of one fire incident and one smoke incident in the U.S. No injuries have been reported.The recalled all-in-one desktop computers, or PCs, are flat-panel monitors with the PC integrated into the monitor housing itself. The power supplies are also inside the monitor or PC housing. The computer chassis has a matte black finish with the brand name "ThinkCentre" in the lower left hand corner of the monitor front. The recalled desktop model numbers are M90z and M70z along with the serial number and manufacturing date code can be found on a label on the underside of the unit.Only certain of the M70z and M90z computers built in this time frame are affected. Consumers will need to check the serial number on their computer with Lenovo to determine if it is subject to this recall.Online at Lenovo's websites, by telephone and direct sales through Lenovo authorized distributors nationwide from May 2011 through January 2012 for about $500 for the M70z model and $800 for the M90z model.MexicoConsumers should immediately stop using the computers, unplug the power supply and contact the firm to determine if your computer is included in the recall and to schedule an appointment for a free replacement of the power supply.For additional information, contact Lenovo toll-free at (855)248-2194 anytime, or visit the firm's website at www.lenovo.com/aiopsurecall