CRS520-4XS-16XQ-RM 2 2.5Gb 4 SFP28 25Gb 16 WSFP28 100Gb Switch

Switch is super quiet and low power compared to my other 100g ethernet switches. Its so quiet that I'm able to put this in my office, hearing only a soft hum. Connects well with my Arista DCS-7060CX-32S and DCS-7160-32S switches, requiring FEC to be set to fec91. Speed is auto-negotiated without a problem. Also works well with low cost Intel 100G CWDM4 QSFP28 Transceivers. Prior to this switch, mostly QNAP offered quiet 100g switches with limited features. This switch offers additional powerful features like RoCE support. I plan on buying additional units soon.

This thing is a beast. It does everything I need really well. There is a steep learning curve if you are new to this, but it is worth it. Speeds are fantastic, as is the flexibility of configuration, all with low power consumption and low noise. Update 12/11/2024: There appears to be an issue with establishing 2.5gb connectivity on Ether 1 and Ether 2. The negotiation falls back to 1gb/s.