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| Basic Information | ||
| Type | Mid Tower | |
| Material | Steel + Glass | |
| Motherboard Compatibility | ATX, Micro-ATX, ITX | |
| Side Panel Window | 4mm Tempered Glass | |
| Front Panel | 4mm Tempered Glass (270° full panoramic view) | |
| Features | ||
| Cooling System | Air & Liquid Cooling (Vertical layout with bottom/side intakes) | |
| Expansion Slots | 7 Standard slots | |
| Front Ports | Power, LED Control Button, USB 3.0 x 1, USB 2.0 x 2, MIC / HD-AUDIO | |
| Radiator Support | Top: 120 / 240 / 360mm (Note: Top AIO limits RAM height to 45mm if there is clearance interference) Side: 120 / 240mm | |
| Fan Support | Top: 3 x 120mm / 2 x 140mm Side: 3 x 120mm PSU Shroud: 2 x 120mm Bottom: 1 x 120mm Rear: 1 x 120mm | |
| Pre- Installed Fans | 4 Fans total: * Side: 3 x 120mm ARGB reverse fans * Rear: 1 x 120mm ARGB fan | |
| Drive Bays | 2.5" SSD: 2 3.5" HDD / 2.5" SSD Combo: 2 / 1 | |
| Clearance Space | ||
| Maximum CPU Cooler Height | 170mm | |
| Maximum GPU Card Length | 420mm | |
| Maximum PSU Length | 245mm | |
| Physical Specifications | ||
| Dimensions | 450 x 219 x 456 mm (Depth x Width x Height) | |
| Weight | Net Weight: 6.55 kg Gross Weight: 8.06 kg | |
| Color | Black | |
The Antec CX300 ARGB Black is a mid-tower ATX gaming case featuring a panoramic 270° full-view design with 4mm tempered glass on both side and front panels for unobstructed hardware and ARGB lighting visibility. It supports ATX, Micro-ATX, and ITX motherboards, with clearance for GPUs up to 420mm, CPU coolers up to 170mm tall, and PSUs up to 245mm including cables. The chassis includes four pre-installed 120mm ARGB fans—three reverse fans on the right side and one at the rear—enabling daisy-chaining for synchronized lighting. Vertical cooling design pulls air through mesh on the bottom and side for efficient heat dissipation. Radiator support includes 360mm on top and 240mm on the side, with fan mounting options for up to 10 × 120mm fans simultaneously across top, side, bottom, rear, and PSU shroud. The I/O panel offers Power and LED control buttons, USB 2.0 × 2, USB 3.0 × 1, and MIC/HD-Audio. Drive bays support two 3.5"/2.5" drives and two 2.5" drives. Dimensions are 450 × 219 × 456mm (DWH) with a net weight of 6.55 kg. EVA cushion pads protect against PSU resonance.
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