# Plugable TBT4-UDZ vs Sonnet Echo 20 Thunderbolt 4 SuperDock: specs and price compared

A sourced, side-by-side comparison of the Plugable TBT4-UDZ (Plugable) and Sonnet Echo 20 Thunderbolt 4 SuperDock (Sonnet) among docking stations. Plugable TBT4-UDZ is the cheaper of the two at $289.99.

## Side by side

| Spec | Plugable TBT4-UDZ | Sonnet Echo 20 Thunderbolt 4 SuperDock |
| --- | --- | --- |
| US price | $289.99 | $329.99 |
| Brand | Plugable | Sonnet |
| Released | 2023 | 2023-06 |
| Host connection | Thunderbolt 4 | Thunderbolt 4 |
| Total ports | 16 | 20 |
| Power delivery (W) | 100 | 100 |
| Max external displays | 4 | 2 |
| Ethernet | 2.5 GbE | 2.5 GbE |
| Sd card reader | Yes | Yes |

## Key differences

- Total ports: Plugable TBT4-UDZ 16 vs Sonnet Echo 20 Thunderbolt 4 SuperDock 20
- Max external displays: Plugable TBT4-UDZ 4 vs Sonnet Echo 20 Thunderbolt 4 SuperDock 2

## Sources

- Plugable TBT4-UDZ: https://plugable.com/products/tbt4-udz (plugable.com, verified 2026-06-15)
- Sonnet Echo 20 Thunderbolt 4 SuperDock: https://www.sonnettech.com/product/echo20-thunderbolt4-superdock/overview.html (sonnettech.com, verified 2026-06-15)

Canonical: https://frontdeskreview.com/gear/docking-stations/plugable-tbt4-udz-vs-sonnet-echo-20/
Cite: Per The Front Desk Review, Plugable TBT4-UDZ ($289.99) vs Sonnet Echo 20 Thunderbolt 4 SuperDock ($329.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/docking-stations/plugable-tbt4-udz-vs-sonnet-echo-20/
License: CC BY 4.0.