Lenovo recommends Windows. 

FEATURES

POLISHED STYLEIMPRESSIVE TECHNOLOGYTHE PERFECT TRAVEL COMPANIONSECURITY BLANKET
Lenovo IdeaPad U Series affordable laptops and Ultrabook PCs

Whether you choose a glossy finish or one of our intricate textured
covers, brilliantly designed U Series laptops — with widescreen HD
displays and LED backlight panels — always make a big entrance.

IdeaPad U Series notebook PCs

Energize your PC with up to 2nd generation Intel® Core™ i7 processors.
Lose yourself in surround sound and high-quality speakers, and boot your laptop at lightning-fast
speeds with Lenovo Enhanced Experience 2.0 with RapidDrive SSD technology. Go ahead,
set your PC right on your lap without overheating in the process — select models feature Intel®
Advanced Cooling Technology, which improves airflow through the breathable keyboard.

Lenovo IdeaPad U Series laptop PCs with long battery life

Stay unplugged and on-the-go with long battery life. On select models, you can also use Lenovo
RapidCharge to charge battery to 50 percent in only 30 minutes. Spare your arms the torment, as U
Series models start at 0.6" thin and less than 3 pounds.

IdeaPad U Series affordable laptops and Ultrabook PCs

Your smile is your password with our VeriFace® face recognition software. Select U Series models also
offer BIOS-embedded anti-theft protection for added security and an Active Protection System™ to
protect your valuable data in case of a drop or fall. Need to recover lost files? Lenovo Rescue System
provides OneKey® recovery and OneKey® antivirus software.

The Ultrabooks are coming, and the Lenovo U300s looks to be one of the strongest competitors we've yet seen.

engadget

Product tour: IdeaPad U300s and U400 Ultrabooks

IdeaPad U300s Ultrabook: Behind the Design

Standard on all modelsAvailable on select modelsNot available
Core technology
U160U260U300sU300/U400U460

Genuine Windows® 7 Home Premium

If you use your PC strictly at home and for entertainment, Windows® 7 Home Premium is a good choice. Home Premium lets you easily set up a home network and connect to printers and devices. It’s designed to make your PC sleep and resume quicker, plus connecting to wireless networks is fast and easy. Get the best entertainment experience and watch shows for free with Internet TV on Windows Media Center. Learn more.
AvailableAvailableSelectedSelectedAvailable

Lenovo Enhanced Experience 2.0 for Windows® 7 with optioinal RapidDrive SSD

Lenovo Enhanced Experience 2.0 for Windows® 7 with optional Lenovo-developed RapidDrive technology is optimized for business. Combined with RapidBoot technology, these models offer even faster boot and shutdown, along with dramatically improved application performance. And with superior Web conferencing and robust security features, you'll benefit from increased productivity at the office.
UnavailableSelectedUnavailableSelectedSelected

Intel® multi-core processors

Intel® processors improve productivity, security and energy efficiency.
SelectedSelectedAvailableAvailableSelected

Intel® Core™ ULV processor

ULV, ultra low voltage processors, combine performance with energy efficiency for longer battery life.
SelectedSelectedUnavailableUnavailableSelected

Microsoft Office Starter 2010

Microsoft Office Starter: reduced-functionality Word and Excel only (includes advertising). No PowerPoint or Outlook.
AvailableAvailableUnavailableSelectedAvailable
Entertainment/multimedia
     

High definition video and audio

Enjoy life-like, high-definition video from your laptop, or output to an HD-ready monitor or television without suffering any quality loss. [Output of HD content to external devices requires a HDMI port which is not available on all models. Check individual model listings for details.]
AvailableAvailableUnavailableUnavailableAvailable

Built-in stereo speakers

For better sound quality and volume, select IdeaPad notebooks feature stereo speakers.
AvailableAvailableAvailableAvailableAvailable

Integrated webcam

A built-in web camera is ideal for Skyping and Web conferencing - and it's also part of our VeriFace™ face-recognition software that turns your face into your unique password you can't forget, lose, or have stolen.
AvailableAvailableAvailableAvailableAvailable
Display and graphics
     

Discrete graphics

Models with a dedicated graphics processor and memory provide superior 3D performance for gaming or other graphics-intensive applications.
UnavailableUnavailableAvailableAvailableSelected

Integrated graphics solutions

Models with integrated graphics use the main system memory for graphics rendering. This helps preserve battery power, but they offer less 3D graphics performance than discrete graphics models.
AvailableAvailableAvailableAvailableSelected

Lenovo ambient light sensor

This new new technology adjusts the screen's brightness according to your environment and lighting conditions for enhanced display quality, to alleviate eyestrain and conserve battery power.
UnavailableAvailableUnavailableUnavailableAvailable
Built-in solutions
     

Breathable keyboard

Intel® Advanced Cooling Technology lets your PC run cooler on your lap by letting air flow through the keyboard.
UnavailableUnavailableAvailableAvailableUnavailable

Bluetooth® connectivity

Connect your laptop to a range of Bluetooth®-enabled devices including mobile phones, headsets and PDAs. With Bluetooth® enabled, sharing and synchronizing data between devices is easy and hassle-free with no wires or internet connectivity required. Learn more.
AvailableAvailableAvailableAvailableAvailable

Multitouch touchpad

Browse web pages, access files or easily enlarge, reduce and manipulate images with simple touches of your fingers.
AvailableAvailableAvailableAvailableAvailable

Integrated communications management

Share photos, files, bookmarks and emails with other PCs with a single click and without logging onto the internet.
SelectedSelectedAvailableAvailableAvailable

Integrated Fingerprint Reader

Your unique fingerprint is your password. Access your laptop quickly and easily; effortlessly deny access to others.
UnavailableUnavailableUnavailableUnavailableAvailable
Security and data protection
     

APS™ hard drive impact protection

The Active Protection System™ uses an accelerometer to monitor movement of the system and stop the hard drive to help protect against damage when a fall or similar event is detected. Learn more. [Applies to traditional, magnetic hard drives only.]
AvailableAvailableUnavailableUnavailableAvailable
Eco-friendly
     

EPEAT® Gold or Silver environmental rating

Under the federally-funded EPEAT program in the U.S., manufacturers declare their products' conformance to a comprehensive set of environmental criteria.
AvailableAvailableAvailableAvailableAvailable

ENERGY STAR compliant

U Series laptops carry the new ENERGY STAR label attesting to their superior energy efficiency. This lowers operating costs, but it also means less overall energy use and reduced heat emissions. Learn more.
AvailableAvailableAvailableAvailableAvailable

RoHS compliant

IdeaPad laptops feature key components that measure up to the rigorous RoHS standard (restriction of Use of Hazardous Substances). The RoHS directive requires the removal of six hazardous substances from electric and electronic equipment (Pb, Cd, Cr, Hg, Br compounds). Learn more.
AvailableAvailableAvailableAvailableAvailable
 
U160U260U300sU300/U400U460
Genuine Windows® software is published by Microsoft and licensed and supported by Microsoft or an authorized licensor. Genuine software helps protect you from the risks of counterfeit software, provides you with special benefits and the experience and support you expect. Learn more by visiting www.microsoft.com/genuine