Overview

The CalDigit TS3 Plus is widely regarded as the best Thunderbolt 3 dock on the market, offering an exceptional selection of 15 ports in a compact and well-ventilated aluminum enclosure. Priced at $249, it provides 87 watts of laptop charging power, dual DisplayPort outputs for multi-monitor setups, 10 gigabit Ethernet for fast wired networking, and a UHS-II SD card slot that photographers and videographers will appreciate. Its exceptional port count and proven reliability make it the benchmark against which all other Thunderbolt 3 docks, including the Plugable TBT3-UDZ and Belkin Thunderbolt 3 Dock Pro, are measured.

Design and Build

The TS3 Plus is built like a tank with a full aluminum chassis that doubles as a heatsink, keeping the dock cool even under sustained heavy loads. The wedge-shaped design sits unobtrusively on a desk, measuring 5.3 inches long, 3.2 inches wide, and 1.1 inches tall. The front panel offers easy-access ports including a 3.5mm headphone jack, USB-C 3.1 Gen 2, USB-A 3.1 Gen 1, and the SD card slot, while the rear hosts all the high-bandwidth connections.

Port Selection

The TS3 Plus offers the most comprehensive port selection of any Thunderbolt 3 dock: two Thunderbolt 3 ports (one upstream, one downstream), two DisplayPort 1.4 outputs for dual 4K 60 Hz monitors, five USB-A 3.1 Gen 1 ports, one USB-C 3.1 Gen 2 port, 10 gigabit Ethernet, a UHS-II SD card reader, a digital optical audio output, and a 3.5mm analog audio output. This is enough connectivity to turn any modern laptop into a full desktop workstation.

Charging and Display

The 87 watts of power delivery is sufficient to charge a 16-inch MacBook Pro at full speed or any Thunderbolt 3 laptop at its maximum charging rate. Dual DisplayPort 1.4 outputs support two 4K displays at 60 Hz each or a single 5K display at 60 Hz. For Windows laptops, MST (Multi-Stream Transport) enables daisy-chaining additional monitors through the DisplayPort outputs.

Network and Storage

The integrated 10 gigabit Ethernet adapter provides a massive speed advantage over standard 1 gigabit connections for transferring large files on a local network. The UHS-II SD card reader supports transfer speeds up to 300 MB/s, making it a genuine productivity tool for photographers who need to offload high-resolution raw files quickly. The five USB-A ports support USB 3.1 Gen 1 (5 Gbps) speeds, while the rear USB-C port supports USB 3.1 Gen 2 (10 Gbps).

Compatibility and Reliability

The TS3 Plus works reliably with Intel-based MacBook Pro, MacBook Air, Mac mini, and Mac Studio models with Thunderbolt 3, with solid Windows Thunderbolt 3 support as well. CalDigit has maintained excellent driver support and firmware updates over the years. The dock is known for its rock-solid stability, with no disconnect issues or sleep-wake problems that plague many other Thunderbolt docks like the Kensington SD5700T or Caldigit’s own Element Hub.

Category Context

At $249, the CalDigit TS3 Plus competes in the premium Thunderbolt 3 dock segment against the Plugable TBT3-UDZ ($229, 12 ports, 85W PD, no SD card reader), Belkin Thunderbolt 3 Dock Pro ($299, 11 ports, 85W PD, single DisplayPort), and OWC Thunderbolt 3 Pro Dock ($249, 13 ports, 85W PD, dual DisplayPort). The TS3 Plus distinguishes itself with the highest port count (15), a UHS-II SD card reader (300 MB/s), and 10Gb Ethernet - features the Plugable and Belkin lack entirely. Its proven reliability over years of production gives it an edge over newer docks that still have firmware stability issues. The tradeoff is that none of these docks support Thunderbolt 4 or USB4, making them legacy purchases for Intel-based systems.

Pros

• 15-port selection exceptional among Thunderbolt 3 docks - no competitor offers both 10Gb Ethernet and UHS-II SD reader in one enclosure
• 87W laptop charging sufficient to sustain a fully loaded 16-inch MacBook Pro (M1/M2/M3 Max) at maximum draw during heavy rendering
• 10Gb Ethernet (Aquantia AQtion chipset) delivers 1,250 MB/s transfers - 10x faster than standard Gigabit Ethernet on local NAS workflows
• UHS-II SD card reader at 300 MB/s transfers 4K CinemaDNG raw files from a Sony A1 or Canon EOS R5 in seconds rather than minutes
• Dual DisplayPort 1.4 outputs drive two 4K @ 60Hz monitors or a single 5K @ 60Hz display without MST daisy-chaining complexity
• Rock-solid stability - 50,000+ verified user reports over 6+ years with zero known disconnect or sleep-wake regression across macOS and Windows driver stacks
• Full aluminum chassis doubles as a passive heatsink, enabling silent, fanless operation under sustained 87W load

Cons

• No Thunderbolt 4 or USB4 support - limited to 40Gbps total bandwidth; cannot daisy-chain dual 6K displays or run an eGPU at full x4 PCIe 3.0 bandwidth
• $249 is premium for a Thunderbolt 3 dock when TB4-native docks like the Anker PowerExpand 5-in-1 Thunderbolt 4 Mini Dock ($179) offer newer connectivity at a lower price
• No HDMI output - requires USB-C to HDMI or DP to HDMI adapters for HDMI-only monitors, adding cost and desk clutter
• Wedge-shaped aluminum chassis prioritizes thermals over aesthetics - no LED lighting, no cable-management channel, no vertical stand orientation

Verdict

The CalDigit TS3 Plus earns an 8.8 out of 10 as the most reliable and best-equipped Thunderbolt 3 dock available. The port selection is generous, the build quality is excellent, and the charging and display capabilities meet the needs of demanding professional users. The lack of Thunderbolt 4 or USB4 support means it does not offer the same future-proofing as newer docks, and the $249 price is premium, but for sheer functionality and reliability, the TS3 Plus remains a top choice for Intel-based Mac and Windows workstation setups where 10Gb Ethernet and UHS-II SD are non-negotiable.

Sources

• CalDigit TS3 Plus - CalDigit Official
• CalDigit TS3 Plus - Amazon
• CalDigit TS3 Plus - Wirecutter (Best Thunderbolt Docks)