1、ATX Power Supported: This MATX case is suitable for i9 13900 and for RTX4090. Supports ATX power supply (160mm maximum length), CPU cooler (within 160mm)/240 water cooling(maximum 280mm long), 6 SSD slots(2.5in per SSD), and graphics card is limited to 360 x 150 x 80mm. 2、Rich Interface: This mini PC case also features rich external interfaces. Type C and USB 3.0 interfaces meet the needs of daily office and gaming. 3、Clear Side Panel: This mini computer case is designed with transparent side panel made by tempered glass, which is great with RGB to create immersive gaming ambience. 4、Wooden Handle: This mini ATX case comes with a wooden handle that can be easily mounted onto the top, offering more convenience. 5、Simple Style: This small PC chassis with simple and fashionable style pairs well with home entertainment, office work and gaming environment. Item Type: MATX Case Material: Steel, Tempered Glass, Synthetic Wood Chassis Size: Approx. 375 x 298 x 185mm / 14.8 x 11.7 x 7.3in ( Manual Measurement, Slight Error May Exist ) Capacity: 20.6L Support Motherboard: MATX/ITX Motherboard Power Supply: ATX (Maximum 160mm Long) Front I/O: USB3.0+Type C Supported Top Performance: For i9 13900 + RTX4090 Input Voltage: AC 110-240V CPU Cooler: Support CPU Air Cooler (Within 160mm), 240 Water Cooler(Maximum 280mm Long) SSD: 3.5in x 3 + 2.5in x 3 Graphics Card Size: Within 360 x 150 x 80mm / 14.2 x 5.9 x 3.1in Position of Fan In the Chassis: 12025 x 3 At The Bottom + 12025 x 2 At The Top + 12025 x 1 At The Rear 1 x MATX Case 2 x Installation Bracket 1 x Wooden Handle 4 x Baffle 1 x Plate 3 x Dust Screen 4 x Foot Pad 1 x Screw Kit