CalDigit TS4 (Thunderbolt Station 4)
The uncontested benchmark in workstation docking with 18 ports, 98W Power Delivery, and 40Gbps Thunderbolt 4 bandwidth.
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For creative professionals and MacBook Pro power users needing massive peripheral expansion without cable clutter, the TS4 delivers unmatched 18-port connectivity, full 40Gbps PCIe data channels, and rock-solid 98W host charging.
What We Liked
- Unrivaled 18-port expansion including 3 full Thunderbolt 4 downstream ports and 5 USB-A ports
- Sustained 98W host charging easily powers 14-inch and 16-inch MacBook Pros under full CPU/GPU workloads
- Dedicated 2.5GbE Ethernet interface delivers more than double the throughput of standard Gigabit docks
- Dual UHS-II SD and microSD card slots operate concurrently at full bus speeds
- Heavy-gauge fluted aluminum chassis acts as a passive heatsink for silent, fanless thermal regulation
What Could Be Better
- Cannot bypass native hardware single-display limits on base M1 and M2 Apple Silicon chips
- Premium price point compared to standard non-Thunderbolt USB-C docks
Why It Stands Out in Our Analysis
For intensive multi-peripheral workstations, the CalDigit TS4 represents the pinnacle of Thunderbolt 4 engineering. By fully exploiting Intel's Goshen Ridge controller architecture across 40 Gbps bi-directional channels, the TS4 hosts 18 distinct ports without causing USB bandwidth starvation.
Power delivery is rigorously engineered: the TS4 provides continuous 98W of USB Power Delivery, ensuring that 14-inch and 16-inch MacBook Pros, Dell XPS, or ThinkPad workstations charge at top speeds even during multi-track 4K video exports. Its extruded aluminum enclosure doubles as a thermal heatsink, keeping internal temperatures well within safe thresholds without noisy fans.
For dual-monitor setups, users with M1/M2/M3/M4 Pro or Max chips, base M4/M5 Airs, or modern Thunderbolt Windows laptops can effortlessly drive dual 4K 60Hz or dual 6K displays via the DisplayPort 1.4 output and downstream Thunderbolt 4 ports with zero latency or software drivers.
Ideal for MacBook Pro, MacBook Air (M4/M5), and high-end Windows laptop owners who demand single-cable desktop expansion, high-speed 2.5GbE networking, and reliable dual-display output.
The TS4 uses native DisplayPort Alternate Mode and Thunderbolt tunneling; it does not contain DisplayLink chips. Consequently, base M1 and M2 MacBooks are restricted by Apple's silicon to a single external display. Also note that the 2.5GbE port requires a Thunderbolt host and will not function if plugged into a legacy USB-C-only port.


