4 pin, it blows decently, at medium speeds it is almost inaudible, I can’t say anything about the noise at maximum speeds, since the PC is office, the processor is cold Athlone 3000G, the mid tower case, the scenario is only surfing, social networks, that is, not any games (I'm attaching a screen of temperatures). Please note that two modifications are produced under this marking, 9 and 11 blades, as well as differences in maximum speed and different air flows, in general, the variation with 9 blades is slightly weaker (see screenshots from the official site). I got a version with 9 blades, although when ordering online, the product card indicated a model with 11 blades. Even in version 9 there are only four short screws, in version 11 there are both short screws and long bolts, but in version 9 the damping rubber bands are already out of the box, and in version 11 they need to be glued by yourself. In short, for 274. suitable for the countryside. Thank you for your attention .
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