I am not sure it is a successor to the T400, but it is a T-line of Lenovo laptops. If you look at, you will see lot of similarities with T400 and it is vastly different than T400 as well. Lets go over the laptop and we will discuss differences in this laptop.
Dimension wise it is exactly same like T400 but the difference, however, is the battery part that is sticking out. Look at the side, you will see that the Optical Drive has been moved from the left side to the right side. The wireless ON/OFF switch has been moved to the side. There is just a headphone jack but no mic jack and there is an inclusion of eSATA port.
On the left hand side, the Ethernet jack is there and modem jack has been moved to the back. There is one display port and three USB ports. That was the exterior.
What is the immediate difference when you use that laptop that track pad has a texture. As you glide your finger over, you will see the difference. I don't say it is rubbery but it has different texture.
Actually, over years of use the track pad gets shinny and it changes; I think this finish right here will prevent it from happening. The finger print reader is moved closer to the track pad.
The huge difference between Lenovo and Apple laptops is the inclusion of stickers on the left side. Apple gives laptop very streamlined and very clean appearance. It is very high performance machines; it runs very cool; it does not get hot. The famous IBM Lenovo keyboard is still there but the design at the top has been changed slightly.
If you ask me, I will say that I like old T400 design better. The speaker grill is little bit more pronounced now on both sides. Another difference between T400 and other T series in general is that hinges are now even; before the left hinge was bigger and right hinge was much smaller. Another difference is that the side bezels are now symmetrical. With T410, you will also expect a webcam. The webcam area also has a LED light.
Overall, I am very pleased how this machine is designed as well and how it functions. But when I compare with T400, I am not sure; I can say that one is better than the other. Obviously, this unit has Core i5 and i7; therefore the memory controller embedded into the CPU, so it eliminates the performance bottom that was existing in the Dual-Core processor. So that is one huge advantage. The WiFi coverage is super and performance, again, overall is excellent. So, out of 5 stars, T410 gets 4.5.