Front I/O: 1 x USB 3.0, 1 x Type-C (connected via a 2-in-1 USB 3.0 19-pin header). Material: The case and side panel are made of 1.5mm SPCC steel, with an additional 3mm acrylic ventilated side panel included. Motherboard Compatibility: Supports ITX motherboards (170 x 170mm) and non-standard mATX motherboards with dimensions within 240mm (9.45') in length and 210mm (8.27') in width, which can also be installed in the K29 case. Power Supply Compatibility: Supports FLEX 1U power supplies, up to 170 x 80 x 40mm (L x W x H). CPU Cooling: Air coolers up to 56mm (2.2 inches) in height. Graphics Card: No support for discrete graphics card installation; no additional PCIe expansion slots. Storage: 1 x 2.5-inch hard drive bay. Ultra-Compact Size: The K29 is just 4.1L (225 x 75 x 248 mm / 8.9 x 3 x 9.8 inches), ideal for space-saving builds and HTPC setups. Includes two handles (plastic and leather) for easy portability.