The Chieftec UNI Series BS-20B-OP mini-tower chassis combines versatility and functionality for users looking to build or upgrade their system. Its toolless design allows for easy installation and maintenance, making the assembly process seamless. The chassis features multiple expansion bays to accommodate different drives, including support for both 2.5-inch and 3.5-inch forms, so users can customize their storage options to suit their needs. With a sleek design, this mini-tower chassis supports video cards up to 270 mm in length and CPU coolers with heights up to 143 mm, ensuring compatibility with high-performance components. The front panel offers convenient access to USB and audio connectors, allowing quick connectivity. Additionally, the inclusion of security features like a padlock loop and Kensington lock support provide peace of mind for users concerned about securing their hardware.