The answer — one pick, priced
Get the
CalDigit TS4
no budget ceiling
The default answer across 13 sources — 18 ports, 2.5GbE, 98W upstream, and flawless Mac, Windows and Chrome support in one Thunderbolt 4 box.
Fit ledger — need → measured evidence
■ The catch — co-equal billing, always
You are paying $380 for ports, not for speed or power. Its 98W upstream is beaten by a dock costing $80 less, its 40 Gbps is exactly what the $200 Razer delivers, and the Thunderbolt 5 Plugable pushes 140W for $299.95. Buy the TS4 for 18 ports and universal compatibility — buy anything else if what you want is headroom.
Dealbreaker? Runner-up №1 is Thunderbolt 5 with 140W for $80 less ↓
■ Every product has a catch. Verdicts that hide it are how bad buys happen.
Don't buy this if…
- you only need to add one or two USB-A ports to a laptop (no display, no Ethernet)
- you need KVM switch functionality to share peripherals between two computers
- you need eGPU for gaming or GPU-accelerated workloads
- you must play HDCP-protected streaming (Netflix, Disney+, Apple TV+) on a Mac while docked
Wrong product for you is still a bad buy. These are the cases where we'd send you somewhere else.
Runners-up — if your needs differ
Adjacent verdicts — other needs, same method
Different budget, different household, different job — each of these is already researched, priced and verified. Take the one that matches your need.
Traps — this verdict avoids
Why the CalDigit TS4 is right for you
It avoids every trap below — and for just me, no budget cap, it is the pick because it delivers:
Your Mac's chip sets the screen count, not the dock
No dock can add a display Apple's silicon will not drive. Base M1 and M2 MacBooks output exactly one external screen; the base M3 does one with the lid open, two with it closed; base M4 and M5 finally do two either way; Pro chips do 2 (some M4/M5 Pro configs 3) and Max chips do 4. A dual-8K claim on the box describes the dock, not your laptop. Only DisplayLink software gets past the limit, and Windows and ChromeOS have no limit at all.
DisplayLink kills HDCP, and cheap DisplayLink docks vanish
A DisplayLink dock compresses the desktop on your CPU, adds roughly one to three frames of latency, and turns HDCP off across the whole Mac — Netflix, Disney+ and Apple TV+ stop playing on every screen including the built-in one. The cheap end of this market also churns: the MOKiN 13-in-1 that held this card's budget slot in July is now "Currently unavailable" with no price. Sub-$100 DisplayLink docks appear and vanish; Plugable and Kensington are where the driver and firmware support actually lives.
Port count is marketing; shared bandwidth is the spec
Count what the ports actually do. Two of the Anker 778's six USB-A ports run at 480 Mbps USB 2.0. Only three of the Kensington SD5780T's four USB-A are 10 Gbps — the fourth is a 5V/1.5A charging port. The Anker 555's USB-C port is data-only, so only its HDMI carries video and it can never drive two screens. And the Plugable UD-6950PDH reaches your laptop over plain 5 Gbps USB 3.0, not 40 Gbps. Ethernet splits the same way: 2.5GbE on the CalDigit and the Thunderbolt 5 Plugable, 1GbE on everything else here.
Provenance — 13 sources, dated
Winners are picked from the full research dossier at knowledgelib.io. Prices, stock and listings are re-verified monthly.