EK-SBAY DDC 3.2 PWMC is a high-performance 5.25″ single-slot form factor Pump Unit with integrated reservoir. The unit comes pre-installed with one EK-DDC 3.2 PWM water pump. PWM control allows for automatic pump speed regulation depending on your CPU temperature. Full performance on demand or whisper quiet operation in idle mode! This product features two G1/4 threaded ports which allow for installation of virtually any G1/4 thread fitting / barb. EK recommends EK-CSQ series Compression Fittings/Adapters. G1/4 and G3/8 threaded ports on the top of the reservoir serves as a fill ports for the system. For easier filling a practical pouring cup is included. This product also features anti-vibration rubber mounting system which effectively silents this pump setup by de-coupling it from the rest of the computer chassis. Product is made of high quality POM Acetal. Front cover is made of quality acrylic glass. Mounting mechanism and easy to follow installation guide are enclosed. This unit can be upgraded with EK-DDC Heatsink Housing, available in both Black as well as Nickel plated version. With the installed EK-DDC Heatsink Housing the unit occupies two 5.25″ slots as it portrudes over the single 5.25″ form factor height limitation. Enclosed: -EK-SBAY DDC 3.2 PWM unit with pre-installed water pump (DDC 3.2 PWM) – mounting mechanism – pouring cup – installation manual Made in Slovenia – EU!