Dual 25GbE SFP28
Two SFP28 ports accept fiber or DAC for 25GbE, or compatible SFP-to-RJ45 modules for 1 / 2.5 / 5 / 10GbE networks. Use them for a NAS, a switch, a direct link to another machine, or two separate networks.
LightOne 25GbE Thunderbolt Docking Station
LightOne is a Thunderbolt docking station with two 25GbE SFP28 ports. It also charges your laptop, drives a display, reads SD and TF cards, and adds USB ports, all from one Thunderbolt cable.
- SFP28 network
- 2×25GbE
- Host charging
- 85W
- PD input
- 140W
- DisplayPort
- 4K
Specifications
| Host connection | Thunderbolt 3 / 4 / 5, USB4 or USB4 v2 (see Compatibility) |
| Network | 2 × 25GbE SFP28, NVIDIA Mellanox ConnectX-4 Lx |
| Supported modules | Fiber, DAC, and compatible 1 / 2.5 / 5 / 10GbE SFP-to-RJ45 modules |
| Host charging | Up to 85 W over USB-C |
| Power input | USB-C PD, 140 W |
| Thunderbolt | Daisy chain supported |
| USB | 2 × USB-C, 2 × Thunderbolt 3 Type-C, 4 × USB-A 3.0 |
| Card reader | SD + TF (UHS), up to 300 MB/s |
| Display | DisplayPort, up to 4K |
| Cooling | Active fan, adjustable via firmware |
| In the box | LightOne, Thunderbolt cable. SFP28 modules and DAC cables are sold separately. |
Expected network throughput
Real-world throughput depends on the host's Thunderbolt or USB4 link. In ServeTheHome's review (November 2024), LightOne reached 21–22 Gbps on several hosts, including a Mac mini M4, MacBook Pro M1/M4 and an ASUS ROG NUC.
Ports and features
85 W host charging
LightOne delivers up to 85 W to your laptop or tablet over USB-C, so it stays charged under heavy load.
Thunderbolt daisy chain
Connect more Thunderbolt devices in series through LightOne's downstream Thunderbolt port.
USB ports
Two USB-C and four USB-A 3.0 ports for modern and legacy devices.
SD and TF card reader
UHS card reader with transfer speeds up to 300 MB/s.
140 W PD input
LightOne is powered by a 140 W USB-C PD power supply. In an emergency it can also run from a compatible high-output power bank.
DisplayPort
Native DisplayPort output for monitors up to 4K.