?TIPS?This item does not include GPU riser cable, you need to purchase an additional 18.5cm Dual Reverse Connectors riser cable. ?Size? The K39 Mini ITX Case boasts a compact form factor measuring 4.7 x 7.7 x 8.7 inches (5.1L), making it ideal for space-conscious setups. It features two optional handles (one plastic, one leather) for convenient mobility. ?Material Quality?Crafted from high-quality 1.5mm thick steel, the K39 is durable and sturdy. It also includes two steel vented side panels (1.5mm) and one 3mm acrylic vented side panel for replacement. ?Front I/O?Features dual USB 3.0 and Type-C ports via a single 19-pin motherboard connector, delivering high-speed data transfer of up to 5GB/s. ?M/B and PSU Compatibility? The K39 supports standard ITX motherboards up to 170x170mm and FLEX 1U PSU up to 170x80x40 mm. ?GPU Compatibility?The K39 supports GPU up to 185mm(7.28") in length and 40mm(1.57") in height (or 50mm / 1.96” After raising the side panel by included hexagonal brass standoff screws). Additionally, an additional 18.5cm Dual Reverse Connectors Riser Cable is required for installation. ?Optimal Cooling Design?Supports air CPU coolers up to 56mm (2.2 ") in height.The K39 offers excellent heat dissipation, ensuring both durability and aesthetic appeal. Even without installing case fans, especially when not using dust filters, it maintains optimal cooling performance.