M Series desktops with up to genuine Windows® 7 Professional OS and AMD processors^†Up to AMD FX available on M77; up to AMD Athlon II X4 on M75e. or up to 2^nd generation Intel® Core™ i series processors^†2nd gen Intel® Core™ i series available on the M91/M91p, M81, and M71e. deliver responsive performance at breakneck speeds — making quick work of the most intensive applications. If you need to power through advanced video editing and 2D and 3D image design, M Series can oblige.

All of our new M Series models are equipped with Lenovo Enhanced Experience 2.0 for Windows® 7 with RapidBoot technology for startup and shutdown times you have to see to believe — on average about 20 seconds faster boot!^†Faster than a typical Windows 7 computer. Plus, the optional Lenovo-developed RapidDrive SSD technology further optimizes systems for business with dramatically improved application performance.^†RapidDrive optional with M91/M91p, M81, and M71e. Plus, for the M71e, boot time is just 15 seconds! And if that's not enough, the optional SuperSpeed USB 3.0 port for transfers data 10 times faster and delivers 50% more power for connected devices.^†Availability varies by model. Optional USB 3.0 available on the M71e via an additional card.

Talk about multitasking! View up to four screens simultaneously with independent display support.^†Requires optional discrete graphics card. M81 and M71e available with discrete AMD Radeon™ graphics. Available with ATI SurroundView™ on M77. The expanded work area and easier navigation between applications helps reduce errors and improve productivity.

• Standard / mini-tower provides the most robust performance, expandability and features.
• Small form factor (SFF) saves space in smaller work areas.
• Eco ultra-small form factor (USFF) is small enough to fit in your hand for the ultimate in compact computing.

Enjoy a more comfortable user experience with thoughtful ergonomic design and easy-to-use features, including a convenient top power button and handle, tilted front panel for easy plug-and-play device access, and cat-foot cushioning for less vibration.^†Features vary by model.

Our M Series desktops are designated with some of the industry's highest environmental certifications, including ENERGY STAR, EPEAT® Gold, EU Power Consumption, and GREENGUARD®.^†Certifications vary by model. Plus ThinkCentre desktops are made with up to 42% post-consumer content (PCC) with minimal use of plastic.^†Percentage of post-consumer content varies by model. The M91/M91p tower, along with the optional Fingerprint Reader Keyboard, is made from 42.10% PCC, which translates to about 27 plastic bottles. An average soda bottle is about 20.5g and the M91/91p tower comprises approximately 551.5g recycled plastic bottles. M91/M91p SFF uses 39.63% PCC and eco USFF uses 36.45%. Calculation based on EPEAT® standard as reference. Additionally, with smart technology like ThinkVantage® Power Manager software, you can control your PC fleet's electricity usage.

Low-halogen M90p SFF^†Available through special bids only. desktops showcase green construction at its finest. From PC to power cord, components are 100% free of BFRs and PVC.^†Based on iNEMI low halogen definition. Plastic parts contain < 1000 ppm (0.1%) of bromine if the Br source is from BFRs and < 1000 ppm (0.1%) of chlorine if the Cl source is from CFRs or PVC or PVC copolymers. All printed circuit board (PCB) and substrate laminates contain bromine/chlorine total < 1500 ppm (.15%) with a maximum chlorine of 900 ppm (.09%) and maximum bromine being 900 ppm (.09%). And each space-saving desktop is constructed of 13 plastic bottles.^†M90p SFF has around 265g recycled plastic. An average soda bottle is 20.5g, so the recycled plastic percentage of a SFF is 32.8%.

The easy-to-manage, expandable design of our SFFs will help you extend your PCs' lifecycle, lower IT costs, and save money. And small definitely doesn't mean skimpy — our clever engineers fit plenty of ports and slots to help you stay productive today and tomorrow.