https://www.servethehome.com/this-aic-sb407-tu-60-bay-storage-server-houses-over-1pb-of-capacity-intel/aic-sb407-tu-60-bay-front-60-drive-indicator-leds/
AIC SB407 TU 60 Bay Front 60 Drive Indicator LEDs - ServeTheHome
AIC SB407 TU 60 Bay Front 60 Drive Indicator LEDs
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https://makezine.com/parts/indicator-leds-different-colors/
indicator LEDs (different colors) Archives - Make: DIY Projects and Ideas for Makers
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