Thirty metres. That's the server room to the meeting floor, or the network closet to a rack at the far end of the building. You want 10 Gbps point-to-point without commissioning a fibre run or hunting down two SFP+ modules and a media converter.
This Ubiquiti 30 m direct attach cable is SFP+ on both ends. Plug it in, link comes up, you're at full 10 Gbps. If you're still on gigabit today, it backs down to 1 Gbps so nothing's wasted.
One cable. Both ends done. No patch panel, no separate optics. Just the link you need, this length
| brand | Ubiquiti |
| data_rate | 10 / 1 Gbps |
| connector_type | SFP+ to SFP+ |
| cable_length | 30 m |
| type | Direct Attach Cable |