Sonnet Echo 20 Thunderbolt 4 SuperDock (ECHO-DK20-T4)
Here is a closer look at Sonnet Echo 20 Thunderbolt 4 SuperDock (ECHO-DK20-T4).
About
A Sonnet Thunderbolt 4 dock with an internal M.2 NVMe slot (up to 8TB) and dedicated RCA line-out jacks, reaching 8K@60Hz on Windows over its native HDMI 2.1 port — macOS caps that same port at 4K@60Hz.
- HDMI version
- 2.1
- PD passthrough to host
- 100W
- Max resolution
- 7680x4320@60Hz
- Requires DisplayLink driver
- No
Ports: 3× Thunderbolt 4, 4× USB-A 10Gbps, 4× USB-C 10Gbps, 1× HDMI 2.1, 1× Ethernet 2.5Gbps, 1× Audio combo 3.5mm, 1× Audio mic 3.5mm, 2× RCA line-out (stereo), 1× SD UHS-II and 1× M.2 NVMe SSD slot
Confirmed with
- Notebook (generic)
Base Apple Silicon chips (M1/M2/M3) drive only one external display, and the HDMI port is capped at 4K@60Hz on macOS regardless of chip — the 8K@60Hz mode is Windows-only. On PCs, booting directly from the dock's internal NVMe SSD only works with a UEFI BIOS.