The Passion of Noiseblocker are exceptionally quiet fan. Especially the multi-frame models with an innovative housing design and suspension are the hallmarks of the company represents The Black Silent Series Noiseblocker expanded its range to include extra small fan. These are enjoying renewed popularity through the use in compact and mini-HTPCs and disk enclosures. 's limited funding volume of these small fan below 80 mm but is often enhanced by relatively high speeds, resulting in a significant noise. Noiseblocker addresses this problem and designed a series of small and extremely quiet models. Thus disturbs the HTPC in the living room is no longer the movie experience. Externally identifies the series, a black frame with blue transparent fan blades. When XS1-model is a tiny 50-mm rotor with a shallow depth of 10 mm in the Ultra-Silent Edition. The rotation rate is therefore only 3,000 r / min. Particularly impressed, however, the extremely low noise level of only 16.3 dB (A). To attach the fan serve four supplied screws. The connection cable was neatly wrapped and fitted with a 3-pin connector.