Background

The Lenovo IdeaPad U400 is a midsize laptop with a 14-inch, 1366 x 768 LED backlit display. It comes with a 2.4 GHz Intel Core i5-2430M processor, 6GB of DDR3 RAM, and a 750GB hard drive. The laptop supports switchable graphics, featuring both Intel HD 3000 integrated graphics and an AMD Radeon HD 6470M with 1GB dedicated VRAM. It runs on Windows 7 Home Premium (64-bit) and provides an array of connectivity options including VGA, HDMI, Wi-Fi, Bluetooth, one USB 3.0 port, and two USB 2.0 ports. This model has a slot-loading DVD burner but does not present options for SSD upgrade or a Blu-ray drive.

In terms of design, the IdeaPad U400 possesses an aluminum construction and a "breathable keyboard" which stays cool during use. It also integrates a 1.3MP webcam and stereo speakers with SRS Premium Surround Sound software. The laptop has a sealed four-cell battery, which claims up to 7 hours of battery life, although practical usage suggests around 5 to 5.5 hours. Some of the limitations include the lack of an SD card slot, VGA output, and the absence of an accessible design for battery replacement or internal upgrades. Additionally, the touchpad's sensitivity might require adjustment, and users have the flexibility to configure GPU settings to optimize performance for specific applications.

Technical Specifications

  • Processor: 2.4 GHz Intel Core i5-2430M
  • Memory: 6GB, 1,333MHz DDR3
  • Hard Drive: 750GB 5,400rpm
  • Graphics: AMD Radeon HD 6470M / Intel HD 3000
  • Operating System: Windows 7 Home Premium (64-bit)
  • Dimensions (WD): 13.4 x 9.0 inches
  • Height: 0.9 inches
  • Screen Size: 14.0 inches
  • Weight: 4.3 pounds without AC adapter, 4.9 pounds with AC adapter
  • Category: Midsize
  • Webcam: 1,280x720 pixels
  • Ports: VGA, HDMI, headphone/microphone combo jack, 1 USB 3.0, 2 USB 2.0, Ethernet, Wi-Fi 802.11n, Bluetooth
  • Optical Drive: DVD burner
  • Battery Life: Approximately 4 hours
  • Battery: Integrated four-cell
  • Display Resolution: 1366x768 pixels
  • Bluetooth: Included
  • Wireless Display: Intel Wireless Display 2.0
  • RAM Expandability: Up to 8GB
  • Screen Brightness: Average brightness
  • Speakers: Stereo, lack refinement
  • Touchpad: Large, glass, supports multi-touch
  • Chassis Material: Anodized aluminum outer shell, metal inner
  • Audio Jack: 3.5mm stereo headphone jack
  • Networking: Wi-Fi 802.11b/g/n, Bluetooth 2.1 + EDR, Gigabit Ethernet
  • USB Ports: One USB 3.0 port, two USB 2.0 ports

Warranty

The Lenovo IdeaPad U400 comes with a one-year standard warranty. This warranty covers the repair or replacement of defective parts and labor. To claim the warranty, you typically need to contact Lenovo's customer service and provide the product's proof of purchase, describe the issue, and follow their instructions, which may include sending the product to a service center. The warranty may not cover issues arising from accidents, misuse, or unauthorized modifications.