I wanted to connect the ethernet on my GB10s directly to my CRS812, but was concerned about heat created by the sfp to gbe transceivers. I added 6x 10Gtek 80 meter transceivers to my CRS812.
Heat went up about 12 degrees Fahrenheit.
Cold cable on top is a twinax.
Adding an CRS804 and some network storage soon.
Testing hydroponic cooling systems for GB10 temperature control.
Bass shaking robots in concert mode.

Speaker provisioning and 400G breakout cable testing (FS vs Gtek).
400G DD to 4x 100G
400G DD to 2x 200G
200G to 2x 100G
I didn’t have issues with any cables, but I felt that .5m length was too small.
Both vendors had similar shipping speeds.
I prefer having a rep, so FS worked out better for me. It was also easier getting a 200G to 4x 50G breakout from them.
Speakers are ESP32-S3 Audio.
Switches are Mikrotik CRS812.
Fans are AC Infinity 6" and 8".
Under the table are 2 Anker Solix S2000 and a 757 (limiting power draw from outlets, solar offset, extra power available for burst)