The NA-SYC1 is a fan accessory set consisting of two fully sleeved NA-YC1 Y-Cables for 4-pin PWM fans. The NA-YC1 Y-Cables make it possible to run two 4-pin PWM fans on a single fan header and to let the mainboard control the speed of both fans simultaneously. Multiple NA-YC1 can be daisy-chained to control more than two PWM fans via one header. Scope of Delivery 2x NA-YC1 Y-Cables https://elecena.pl/product/18024928/na-syc1-noctua-na-syc1-4-pin-y-cables 2021-04-29 https://elecena.pl/product/18024928/na-syc1-noctua-na-syc1-4-pin-y-cables 2021-10-28 https://elecena.pl/product/18024928/na-syc1-noctua-na-syc1-4-pin-y-cables 2022-12-03 https://elecena.pl/product/18024928/na-syc1-noctua-na-syc1-4-pin-y-cables 2024-05-07