What are the features of this computer case regarding hard drives and graphics cards?

You can use two mechanical hard drives or solid state drives simultaneously, and it includes a fixed graphics card bracket for stable installation.

What types of motherboards are supported by this computer case?

This computer case supports ITX and UMATX motherboards, as well as motherboards measuring 13.7 x 9.8 inches (35 x 25 cm).

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PC Open Chassis Computer Heat Dissipation Case Acrylic ATX MATX ITX Motherboard Test Bench Platform DIY Computer Case with Metal Switch

Size: Supports 13.7 x 13.7 inch (35 x 35 cm), ITX and UMATX motherboards, and supports motherboards in 13.7 x 9.8 inches (35 x 25 cm).
Hard Disk: You can use two mechanical hard drives or solid state drives at the same time.
Graphics card bracket: Fixed graphics card or expansion card, stable and unwavering.
Power supply:supports ATX/SFX/small 1U power supply, and is equipped with a metal switch to make booting more convenient, USB and audio The port is convenient for external connection.
Features: support back wiring, the overall is more concise; external USB interface, support ultra-long graphics card, CPU height is not limited, reserved 1 fan installation position.