The CM 690 NVIDIA Edition is a mid-tower computer case from Cooler Master. It's main feature is an expanded cooling system that can support the NVIDIA SLI certification. It's dimensions are 213 W x 482 H x 524.5 mm L, and it weighs 9.8 kg. The CM 690 is made of 1.0mm steel and supports ATX and Micro-ATX motherboards. There are 4 5.25" drive bays available, as well as 5 internal and 1 external 3.5" drive bays. 7 expansion PCI slots are available as well. The cooling system utilizes 6 fans: a 120mm green-LED front fan, a 120mm rear fan, 2 top fans (120 or 140mm), an optional 120mm bottom fan, a 120mm left fan, and an optional 15mm right fan. The CM 690 supports a standard ATX-PSII power supply.