NZXT Guardian Black SECC Steel Chassis ATX Mid Tower Case 921RB-RL Constant Temperature Monitoring: Three temperature probe monitoring system allows the user to constantly gauge thermals within the system at all times to prevent overheating Multimedia and peripheral inputs: E-SATA, Intel HD audio, mic, and two USB inputs are standards with the Guardian 921 allowing for maximum peripheral input Silent Cooling: Comes standard with 3 120mm fans installed to maximize cooling performance with minimal noise Updated Design: The all new Guardian 921 RB features a bottom mounted PSU, CPU heatsink cutout, and an extra slot for a 140mm fan at the top for more cooling performance. The all new Guardian 921 RB comes in red LED combination. Spacious Interior and Solid Construction: Built from solid .88mm and 1.00mm steel, the Guardian 921 gives the user ample space for large, high-end video cards and space for up to four internal hard drives NZXT Crafted Series Design: NZXT’s latest addition to the Crafted Series takes cues from gaming culture with elegant curves and a newly designed clear side panel. Building off of the original Guardian’s success, the Guardian 921RB features a robust set of features for the budget conscious PC Gamer. Designed with a futuristic and sleek curves, the Guardian 921RB is the perfect chassis to show off your gaming chassis.