1x New Replacement fan for QNAP FAN-4CM-R02 | eBay
FAN-12CM-T01 original QNAP Fan (CPU/Chipset) 120x120x25mm PWM - sparepartworld.com
QNAP TS-473 4-Bay NAS Review - A Look Inside | TechPowerUp
The 6cm CPU fan on the back of the QNAP TVS-h874 unit is extremely noisy. Is there a higher quality fan on the market that can do same or better job without
Amazon.com: Qnap 2900rpm CPU Fan Module for TVS-x82 and TVS-x82T : Electronics