Product parameters Chassis model: BLJ4P173-343D Case form: Reinforced portable Chassis size: Depth 343 x Width 470 x Height 294.7mm (excluding corner protectors) Chassis color: black sand pattern spray paint Material: SGCC high-quality 1.0mm galvanized steel for the body Motherboard position: (140mm long power supply) supports 305 × 280mm, (180mm long power supply) supports standard motherboards within 305 × 244mm CPU heatsink: height limit of 150mm, height limit of 100mm when equipped with water cooling Water cooling: supports 240 cold row models, size 276 × 120 × 27 (including fan thickness 53) mm Hard drive slot: Supports 2 3.5-inch and 1 2.5-inch hard drives Fan position: Standard configuration includes 1 6cm fan and 2 8cm fans Power supply: Supports ATX power supply Expansion slots: Supports 7 full height expansion slots, with a PCI card height limit of 155mm and length limit of 340mm Internal available space: length 403 x width 300 x height 175mm Interface settings: motherboard power switch, motherboard power indicator light, display screen control buttons, reserved 4 COM holes, 2 USB holes Display screen: 4 17.3-inch screens, 1920 × 1080ips, 4 HDMI cables Speaker: Built in 2 2.1-channel speakers Input devices: navigation keyboard/optional industrial keyboard with touchpad/optional sound card Net weight: 15.4kg Gross weight: 16.9kg Packaging size: 59.5 × 51 × 41.5cm double-layer packaging