The PC-Q25 Mini-Tower Case from Lian Li is a small compact case for Mini-ITX or Mini-DTX systems with a removable drive rack located at the bottom. Because of its size and internal layout, there are a few quirks when working with this case. The PC-Q25 can fit up to five 3.5" drives with additional options depending on your drive configuration. The power supply slot sits right next to the motherboard; therefore, you will only be able to install CPU coolers up to 3" tall. On the other hand, it can support graphics cards up to 12.6" long, but for thick cards, you'll have to adjust your drive layout.
Using the bottom drive rack, you can add another two 3.5" and one 2.5" drive. Three 2.5" drives will also work, and is the recommended configuration if you're installing a thick graphics card. For cooling this case has one 120mm fan at the top and one 140mm fan at the front, each with their own air filter. There are no additional fan slots, which may cause components to run hotter than usual so be sure to check your system temperature to prevent overheating.