| 21 May 2025 |
 matthewcroughan - nix.zone | * https://www.amazon.co.uk/SFP-Managed-VIMIN-Rackmount-Aggregation-silver/dp/B0DR2VGVBX | 14:53:10 |
 emily | could still end up below £200. | 14:53:11 |
| matthewcroughan - nix.zone | something like this | 14:53:12 |
| matthewcroughan - nix.zone | eh, not really when you factor in the SFPs | 14:53:22 |
| matthewcroughan - nix.zone | but if I'm making my 10G bed I need to lay in it | 14:53:30 |
| emily | like I said a quick AliExpress search turned up a $95 switch | 14:53:33 |
| matthewcroughan - nix.zone | oh, I kind of want this in a timely manner and am not worried about spending an extra 30 quid | 14:53:50 |
| matthewcroughan - nix.zone | but in totality, this is more expensive than just giving up and using 2.5G | 14:54:01 |
| matthewcroughan - nix.zone | primarily just because of the SFPs | 14:54:16 |
| emily | and one SFP+ was already priced in for the connection to the BPI, so that gives you an £18.44 per SFP module budget before it stops being cheaper | 14:54:23 |
| emily | which is doable with AliExpress multipacks I think | 14:54:28 |
| matthewcroughan - nix.zone | no guarantee they're broadcom ones though right? | 14:54:49 |
| emily | I mean, you just look up the modules. | 14:55:06 |
| emily | I don't think any of the Broadcom ones I found on Amazon clearly did autoneg right | 14:55:17 |
| matthewcroughan - nix.zone | how do you know they're broadcom, do you disassemble them and look at the chip/ | 14:56:54 |
| matthewcroughan - nix.zone | * how do you know they're broadcom, do you disassemble them and look at the chip? | 14:56:56 |
| emily | well sometimes it says in the listing, sometimes you google the model number – but in this case all the 80m and 100m ones that do 10G are the Broadcom chip | 14:58:50 |
| emily | since it's the only option out there | 14:58:56 |
| emily | you still need to research the modules to see how they are with autoneg though | 14:59:13 |
| emily | there's a bunch of posts online | 14:59:16 |
| emily | e.g. https://forums.servethehome.com/index.php?threads/10gb-sfp-rj45-100m.45817/ | 15:00:01 |
| matthewcroughan - nix.zone | I can get 10 of those transceivers for 329 quid | 15:00:03 |
| emily | https://www.reddit.com/r/mikrotik/comments/1bq5b27/testing_10gtek_10gbaset_copper_sfps/ | 15:00:17 |
| matthewcroughan - nix.zone |
The 10GBase-T module is built with the latest IC: Marvell AQR113C. Please note the 10GBase-T SFP+ module can get hot when it's working, because the IC power consumption is 2.5W. We suggest to use this product in places where the ambient temperature is below 50°C.
| 15:00:28 |
| matthewcroughan - nix.zone | not these then | 15:00:36 |
| emily | again, if it's a Marvell chip it won't be rated for 80m–100m | 15:01:17 |
| matthewcroughan - nix.zone | Hard to tell, amazon is telling porky pies | 15:01:27 |
| emily | you can just ignore the 30m ones if heat is a major concern | 15:01:28 |
| matthewcroughan - nix.zone | ah no, you can only buy the 80m ones in bundles of 2, otherwise they downgrade you | 15:01:45 |
| matthewcroughan - nix.zone | two transceivers cost 90 quid | 15:01:59 |
