CalDigit TS4 vs Belkin Connect Pro TB4 — Thunderbolt 4 Dock Comparison 2026

CalDigit TS4 vs Belkin Connect Pro TB4: Two Premium Docks, One Clear Answer

The CalDigit TS4 and Belkin Connect Pro Thunderbolt 4 dock both sit at the top of the Thunderbolt 4 market in terms of price. At $379.99 and $399.99 respectively, they target the same buyer: someone who wants a premium Thunderbolt 4 dock and is not worried about spending $400. But they take very different approaches to earning that price.

The CalDigit TS4 prioritizes port count and features. With 18 ports, 2.5 Gigabit Ethernet, UHS-II card readers, and three audio connections, it is the most feature-complete dock in its price class. The Belkin Connect Pro prioritizes design and brand recognition - it is a clean, well-built dock from a major consumer electronics brand that Apple stores stock.

The short answer: The CalDigit TS4 wins this matchup for almost every buyer. It costs $20 less, offers more ports and faster Ethernet, and provides better Mac firmware support. The Belkin Connect Pro TB4 is a functional dock with a clean design, but it struggles to justify its price against what the CalDigit offers.

Quick Specs Comparison

Design and Build Quality

Both docks are well made, but they look different enough that personal preference plays a role.

CalDigit TS4

The TS4 uses an all-aluminum chassis that doubles as a passive heat sink. The horizontal form factor sits flat on a desk, roughly the size of a paperback book. Ports are split across front and rear: frequently accessed ports like USB-A, audio, and card readers sit on the front for easy daily access. Display, Ethernet, and the host Thunderbolt connection go on the back.

The aluminum build stays cool under sustained loads. The included 0.8m Thunderbolt 4 cable is removable, which is useful when you need a longer cable for different desk layouts.

Belkin Connect Pro TB4

The Belkin dock has a rectangular chassis made largely of high-quality plastic with a cleaner, more minimal design language. The fixed braided USB-C cable comes out of the back and connects to your laptop. The cable is non-removable, which is a minor issue if you need a longer host cable.

Belkin’s design is tidier on a desk in some ways - the fixed cable means one less loose cable to manage. The port layout keeps everything on the front and back in a logical arrangement. Build quality is solid and the plastic does not feel cheap, but it is not the premium feel of CalDigit’s full-aluminum enclosure.

Design winner: Tie, by preference. CalDigit is more premium. Belkin is cleaner on a desk. Neither feels budget.

Port Count: Not Even Close

This is where the comparison becomes lopsided.

The CalDigit TS4 provides three Thunderbolt 4 downstream ports, three USB-C 3.2 Gen 2 ports, five USB-A 3.2 Gen 2 ports, one DisplayPort 1.4 output, 2.5 Gigabit Ethernet, SD and microSD card readers, a 3.5mm combo jack, a dedicated headphone output, and a dedicated microphone input. That is 18 ports.

The Belkin Connect Pro TB4 provides one Thunderbolt 4 downstream port, two USB-C ports (3.2 Gen 2), four USB-A ports (two at USB 3.0, two at USB 2.0), two Thunderbolt 4 video outputs, 1 Gigabit Ethernet, and one 3.5mm combo jack. That is 12 ports.

On paper, Belkin has two Thunderbolt 4 video outputs built in versus CalDigit’s one DisplayPort. That is Belkin’s main port advantage. For everything else - USB connections, Ethernet speed, card readers, audio jacks - CalDigit wins decisively.

The CalDigit’s three Thunderbolt 4 downstream ports are a significant practical benefit. Each can serve as a display output (via adapter), a 40Gbps data connection for Thunderbolt storage, or a downstream hub connection. Belkin’s single Thunderbolt 4 downstream port is a notable constraint for a $400 dock.

Port winner: CalDigit TS4, clearly.

Display Support

Both docks deliver dual 4K@60Hz through their Thunderbolt 4 connections. Neither natively supports more than two external monitors on most hardware configurations.

The Belkin’s two Thunderbolt 4 video outputs are convenient if your monitors have Thunderbolt or USB-C inputs, since you can plug monitors directly without adapters. The CalDigit’s one DisplayPort plus three Thunderbolt 4 downstream ports require USB-C to HDMI or USB-C to DisplayPort adapters for the Thunderbolt ports, but the flexibility of those ports (data, display, hub) is more versatile overall.

On Mac with M1 Pro/Max or later, both docks support dual external displays. Base M1, M2, and M3 MacBooks are limited to one external display regardless of dock.

Display winner: Tie. Same resolution and refresh rate capability. Belkin’s built-in video connections are more convenient. CalDigit’s multiple Thunderbolt ports are more versatile.

Power Delivery

CalDigit delivers 98W to the host laptop. Belkin delivers 90W. Neither includes the power adapter in the box for the host laptop charging - both use the laptop’s existing charger fed through the dock’s input port.

For most 13 to 15-inch laptops, both 98W and 90W are sufficient. The 16-inch MacBook Pro maximum consumption is around 96W under sustained CPU and GPU load, which means CalDigit can technically keep up where Belkin might fall slightly short during peak usage.

Power delivery winner: CalDigit TS4 by a small margin.

Ethernet Speed

The CalDigit TS4 includes 2.5 Gigabit Ethernet. The Belkin Connect Pro TB4 includes 1 Gigabit Ethernet.

For general internet use - web browsing, video calls, cloud storage sync - 1 Gigabit Ethernet is fast enough and the difference is invisible. For local network file transfers to a NAS, network video editing, or home lab use, 2.5GbE is a real advantage that can make transfers 2.5 times faster.

Ethernet winner: CalDigit TS4.

Card Readers and Audio

The CalDigit TS4 includes SD and microSD card readers running at UHS-II speeds (up to 312 MB/s). It also has three audio connections: a 3.5mm combo jack (front), a dedicated headphone output, and a dedicated microphone input. For creators who regularly work with camera cards or need separate audio routing, these features matter.

The Belkin Connect Pro TB4 has no card reader and a single 3.5mm combo jack. If you need card readers, you will need a separate USB reader that eats into the Belkin’s limited USB port count.

Card reader and audio winner: CalDigit TS4.

Mac Compatibility and Firmware Support

This is one of the most important practical differences for Mac users.

CalDigit has built their reputation on Mac-first firmware support. They consistently push firmware updates before major macOS releases, ensuring day-one compatibility with new MacBook models. They maintain a macOS firmware update utility and have been tested and recommended by Mac YouTubers and tech journalists for years. The TS4 is stocked by Apple retail stores.

Belkin certifies the Connect Pro TB4 for Mac and the dock works correctly on supported MacBook Pro and Air models. However, Belkin does not provide the same level of proactive firmware maintenance. For users who frequently update macOS and want confidence that their dock will work correctly on day one, CalDigit is the safer choice.

For Windows users, firmware update cadence matters less since driver updates come from Intel’s Thunderbolt software rather than the dock manufacturer.

Mac compatibility winner: CalDigit TS4.

Pricing and Value

At $379.99 (CalDigit) vs $399.99 (Belkin), the price gap is $20 in CalDigit’s favor. For a dock you plan to keep for several years, $20 is irrelevant. The value story is everything else.

The CalDigit TS4 at $379.99 gives you 18 ports. The Belkin at $399.99 gives you 12 ports. The CalDigit includes 2.5GbE, UHS-II card readers, and three audio connections. The Belkin includes none of these. The CalDigit costs less and gives you more.

There is no scenario where the Belkin Connect Pro TB4 provides better value than the CalDigit TS4 for the same buyer unless that buyer places a very specific premium on Belkin brand recognition or the fixed cable design.

Value winner: CalDigit TS4, decisively.

Verdict

The CalDigit TS4 wins this comparison clearly. It costs $20 less, offers 50% more ports, faster Ethernet, card readers, more audio connections, and better Mac firmware support. The Belkin Connect Pro TB4 is a functional, well-made Thunderbolt 4 dock, but at $399.99 it is overpriced relative to what it offers.

Choose the CalDigit TS4 if:

• You want the most features for your money in a premium TB4 dock
• You are a Mac user who cares about firmware update support
• You need SD/microSD card readers, 2.5GbE, or multiple audio connections
• You want flexibility from multiple Thunderbolt 4 downstream ports
• You plan to keep the dock for years and want the best long-term value

Choose the Belkin Connect Pro TB4 if:

• You have a strong brand preference for Belkin over CalDigit
• The fixed built-in cable is a specific design preference you value
• Your monitors use Thunderbolt/USB-C inputs and prefer the built-in TB4 video outputs
• Everything else is equal and you happen to find the Belkin at a significantly lower price

For individual reviews, read our CalDigit TS4 review and Belkin Connect Pro TB4 review. If you are still comparing Thunderbolt 4 docks broadly, our docking station buying guide covers the full landscape.