These computers can be a really good buy IF you take care to thoroughly test them on receipt, and either fix problems found or send back as required. And since they already have had a life, don't expect them to last forever.For the fourth one I bought (March 2025):I returned it because the lid to the case was totally stuck, could not release it even after consulting a few youtube videos. Otherwise it seemed to work.Returning it was easy and free. I'll try again in a few weeks but perhaps with a slightly more modern model.For the third one I bought (November 2019), I wrote then (prices have dropped since then!):It's a risk buying something used, but it has worked out for me (so far at least!).I'm happy and I'd give it 5 stars except it arrived with defective RAM... vendor sent me new RAM eventually, but it wasted my time.So for about $200 (and my time) I now have a relatively modern computer with 8 GB RAM, some USB3 ports (and more USB2 ports).The USB ports are stacked closely together in such a way that there would a collision between some "dongle" type USB devices (even some USB disk keys); fortunately for me i'm not using any like that.It's fan noise is fairly quiet.I like to have it standing up which means that the CD drive is sideways, but i'm still able to get it to load CDs with a little care.I replaced the disk drive it came with with a $150 Samsung 500 GB solid disk drive which does wonders for performance.I was hoping to reuse (from a previous computer) some pcie cards that provided extra USB ports, but they required power from a floppy disk power cable which this does not have; i settle for using an external USB hub (for my slower USB devices). (I could have purchased a sata power to floppy power adapter, plus perhaps a sata power splitter... would voltages be correct?).It has bays for two 3.5" disk drives, and power, but would need to buy an additional SATA cable to add a second disk drive.In the front it has CD/DVD drive, an unused slot that could accomodate a card reader(?), 4 USB2 ports, speaker and microphone jacks, and a power button that is really hard to see in dim light.In the back it has 4 USB3 ports, 2 USB2 ports, VGA port, DisplayPort 1.1a, ps2 keyboard port, ps2 mouse port, serial port, ethernet port, speaker and microphone jacks, 2 pcie-x16, 1 pcie-x, 1 pci slots.The third one has been in daily use since 2019 without further issue. I was able to easily upgrade the RAM to 32 GB.The second one I bought (November 2019) I immediately returned as the case was damaged (apparently dropped).The first one I bought (October 2018) I also easily upgraded to 32GB RAM.Itworked just fine until recently (March 2025), now it crashes when there is prolonged heavy disk copying between two disks connected to the computer by USB (usb 3.0 ports).Switching out all peripherals didn't help any.It might be possible to diagnose, but certainly not easy; I'm going to replace it soon.6-1/2 years of service isn't bad...