3x extra-long NA-EC3 60cm extension cables for PC fans, can be daisy-chained for up to 1.8m total length 4-pin connector supports both 3-pin and 4-pin PWM fans, keyed design prevents misalignment High-quality black sleeving: ideal for creating PC builds with clean aesthetics, highly resistant against wear, heat and flames (UL 94 V-0) Compatible with all Noctua 5V, 12V and 24V fans as well as third-party fans that use the same standard connectors Trusted Noctua quality backed up by 6-year manufacturers warranty