Lenovo Thinkpad T400 is equipped with a 14.1-inch 1400 x 900-pixel LED backlight, ensuring a full-blown space for multitasking, multiple windows. The LED-backlight display in the room light is also bright with a medium brightness setting, and when set to higher settings it is suitable for outdoor lighting. The 9-cell battery is a bit inconvenient on the go and looks a little aesthetically pleasing, but with up to 8 hours of continuous use, with just a full charge, these inconveniences are just minor. With a regular 6 cell battery, continuous usage is up to 6 hours if screen brightness is set at 67%.
The Lenovo Thinkpad T400’s keyboard with its quietly spaced keys and wide enough spacing, gives the user comfort even when it takes a long time to compile multi-page reports. In addition, the ThinkPad T400 also supports text viewing with quick-change keyboard shortcuts, and turns on the ThinkLight LED on the top edge of the screen frame for clear view of the keys under conditions. Lack of light. Next to the touchpad has become the standard, the ThinkPad T400 is still equipped with a traditional multi-touch trackpad for users who value nostalgia. But equipping up to two means to move the mouse can also bring little trouble when users are unfamiliar with the keyboard layout of the Thinkpad.
Lenovo ThinkPad T400 pretty much has all the required devices and ports, more or less neatly sorted along the edges, like a DVD / CD burner, VGA-out, an ExpressCard slot, and even a Webcam. You can connect LAN, plus Wireless 802.11 and Bluetooth, without much fuss. On top of that ,the Thinkpad T400 includes three USB ports, two placed on the left side and one on the right. They sit in a kind of perpendicular way compared to the body, so you get some extra space for other peripheral hookups, or at least that’s how it feels in practice. While, a four-pin Fire-wire is placed on the front bezel, along with a Microphone and a Headphone jack. If you are a “connoisseur” users should choose to add a mini speaker to enjoy the music because the speaker system of the machine is large enough but the sound quality is average.
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Comes with the Lenovo Thinkpad T400 are useful software applications, such as the 60-day trial of the Microsoft Office suite of applications, Intel’s Anti-Theft Protection software and Absolute Software’s Computrace technology to ensure data security. The user when combined with optional Fingerprint Reader fingerprint sensor.
The ThinkVantage dedicated software suite allows users to quickly access resources via touch keys including common tasks such as turning the Wireless connection on and off and changing battery modes. With professional users, you can back up your data and configure your security settings with this specialized software.
Other prominent features of the Thinkpad T400 will also appeal to users as it extends battery life with ATI’s discrete graphics conversion mode to integrated graphics. Or the high-end Active Protection System can protect the hard drive when changing the working environment or the machine crashed while still operating due to anti-shock technology. Besides, it is the ability to detect vibration when the user on the vehicle and automatically switch to the appropriate mode of operation.
The Thinkpad T400 is a slim, compact 1.1-inch model weighing in at 2.3 pounds, with a large battery life, and features that are especially useful for business people as well as satisfying users. Both the universal users but still ensure a reasonable price. The current price of the ThinkPad T400 varies depending on the processor, RAM and graphics and operating system options.
Connectivity and Ports
Wireless Connectivity
Connectivity
Wi-Fi and Bluetooth are both solid — stable enough for browsing, email, pairing a mouse, whatever you need.
Ports
The T400 doesn’t skimp: three USB 2.0 ports, VGA, DisplayPort, Ethernet, smart card reader, ExpressCard slot, SD reader, and a docking connector for desk use. You won’t be digging through a drawer for an adapter with this thing.
Keyboard and trackpad
The keyboard is why people still talk about ThinkPads. Real travel, real feedback, spill-resistant, backlit if you want it. I’d put it up against most modern laptop keyboards and it’d win.
Trackpad’s unremarkable — does the job, physical buttons instead of a clickpad. The TrackPoint is the actual star. Once you learn to use that little red nub without lifting your hands off the home row, going back to a regular trackpad feels clumsy.
Battery
Four, six, or nine-cell. Go with the nine-cell if you can — 6 to 8 hours covers most of a workday. Being able to swap batteries out is underrated; carrying a spare beats hunting for an outlet every time. Lenovo’s Power Manager also tells you the actual battery health instead of leaving you guessing.
Security
Fingerprint reader, smart card support, TPM, and Lenovo’s ThinkVantage security suite. This was built for corporate IT, not bolted on as an afterthought.
OS
Vista out of the box, runs clean on 7, 8, or 10. A lot of people throw Linux on these instead — the hardware handles it well. ThinkVantage Productivity Center is there if you want it; skip it with a clean install if you don’t.
Upgrades
Honestly the best part of owning one of these. RAM, storage, battery, even the optical drive and wireless card — all easy to get to and swap. An SSD alone makes this feel like a different laptop. Lenovo’s service manuals are thorough enough that repairing it yourself is a real option, not just a theoretical one.
Audio
Speakers live on the bottom and sound like it — thin, tinny past a certain volume, fine for a call and nothing more. The mic’s decent for video chats. There’s a combo jack if you want better sound out of headphones.
Bottom line
This thing is still worth owning. It’s not fast, but the keyboard alone makes a case for it, and between the TrackPoint, the build quality, and how easy it is to repair, a secondhand T400 with an SSD and maxed RAM still does real work today.
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Tech Reviewer & Product Analyst
Định Bia has spent over 10 years testing consumer electronics with a focus on smart technology. He work as a product advisor at Biareview where he helped customers find the right devices for their needs. He personally tests every product featured on this site using a consistent evaluation framework covering quality, durability, and value. All reviews are based on experience, not influenced by the manufacturer.