Summary: Using this as a Linux server so I ran into a few issues with the disks that came with it. All of the drivers were for Windows products. But I got past that and it turns out that the PC works great with Ubuntu installed on it. Most of the learning curve was for me to come up to speed on Linux servers, so I will still give the PC 5 stars.
Summary: Very solid, very quiet system. I used the basic system as is and added a 1TB hard drive and Windows 7 Home Premium 64bit (System Builder edition) to build out a usable computer. I used a USB hard drive dock to connect my old system hard drive and copy over my files from my dying system, then copied files over the network from my Windows Home Server (which is having issues backing up our Windows 8 systems).
Summary: I purchased this computer to use as a home server and a Plex media server. It works perfectly for these applications. I purchased 4 Wd red drives and run the Os off of a 16gb usb drive. Together with the power of ZFS and FreeNas it has been utterly stable. I would recommend this box to anyone looking to experiment with there own NAS system. It is quiet, energy efficient, and more importantly stable.
Summary: I bought 3 of these to build and all were used as stand alone PC's. Arrived quickly and are lightning fast after built. Best 300.00 I ever spent on a system like this. The price seems to fluctuate daily and jumps as much as 40-50 dollars. If they get back down around 300.00 I would probably buy another. You can't go wrong with this piece!
Summary: I purchased this machine, installed UBUNTU Desktop 14.* no problem with my own hard drive, and was up and running in less than an hour. Overall, for the price, the machine works as expected. It is ultra-quiet, has a reasonable footprint, and truly has fast USB-connectivity on the motherboard. I can average about 40 MB/s when I run RSYNC.
Summary: It arrived well protected in a sturdy box. Connect up the cables and pop in a DVD and I had Linux Mint 15 running in less than 15 minutes. No BIOS fiddling required. The TS140 seems very quiet (vast improvement over my noisy M58e). I really don't hear the fan(s), just some clicking from the media.
Summary: Combined this with WD RE4 drives and loaded Windows Home Server for a small business. Very good performance and quality built in. I have bought 3 of these with no problems. You can't find a small business or home server at this price that performs well. No problem in a multi-user environment with 10 users sharing files. Comes with Lenovo disk for installing Server 2012. To install Home Server, I had to manually install drivers. No problem - easy setup.
Summary: I still cannot really believe the fantastic deal I got on this computer. I added the WD 1 TB hard drive and Microsoft Windows 8.1 Pro 64-bit and it is really great. Contrary to so many reviews I have read, the Windows 8.1 Pro is super. All the things I want to do it handles with no effort. The ThinkServer TS140 is so much better than other advertisements I have received I just have to pinch myself.
Summary: I was looking for a computer and install a Linux operating system. Because no harddrive, I don't need to pay for a pre-installed Windows operating system. Adding a hard drive and wireless card to the computer is easy. I have used it for a few months. It has been woking wonderfully for me. The cost/performance ratio is great.
Summary: The TS140 was a great choice for my needs, which are somewhat varied. It's whisper quiet, yet powerful enough to get the job done. In particular, I was impressed with the workmanship that went into the building of this machine, as well as the quality of the parts used. Excellent fit and finish. Well packed for shipment by Lenovo.