CalDigit TS3 Plus: a roomy Thunderbolt 3 dock that favours Macs

The CalDigit TS3 Plus is aimed at laptop users who want a single-cable desk setup with lots of legacy ports and enough power to keep a 13–16 inch laptop topped up. It offers two Thunderbolt 3 ports, DisplayPort 1.2 video output, an SD UHS‑II slot, five USB‑A ports, two USB‑C ports (one USB 3.1 Gen 2), gigabit Ethernet, S/PDIF optical out and separate analogue audio I/O — a very complete set for photographers, creatives with multiple peripherals, and people who still need wired Ethernet and SD cards. These specs are taken from CalDigit’s product information. caldigit.com

Independent reviews consistently point out that the TS3 Plus plays especially well with Macs: MacRumors and Macworld note the convenience of the SD reader, the 87W (model‑dependent) power delivery and the ability to run multiple displays from a single TB3 cable. For Mac users who want to avoid juggling dongles, the TS3 Plus is a sensible choice. macrumors.com

Windows laptop owners should be more cautious: PCWorld and TechRadar flag that compatibility and multi‑monitor behaviour vary between Windows machines and USB‑C implementations, and that using HDMI displays often requires an active DisplayPort‑to‑HDMI adapter. If your Windows laptop strictly expects HDMI or your GPU needs more modern DisplayPort/HDMI bandwidth, a newer Thunderbolt 4 / USB4 dock may be a better fit. pcworld.com

At the list price you supplied — USD 209.99 for the unit alone — the TS3 Plus packs an unusually large collection of ports for its era and price bracket. Compared with simpler USB‑C hubs it supplies true 40Gbps Thunderbolt 3 bandwidth on the TB3 ports, 87W power delivery and a dedicated UHS‑II SD slot, items reviewers called out as differentiators when it launched. CalDigit’s product page and datasheet list the port count and power specs. caldigit.com

Against newer docks like CalDigit’s own Thunderbolt 4/USB4 models, the TS3 Plus is older tech: it lacks hardware-level Thunderbolt 4 features (improved daisy‑chain resilience and broader certification), and DisplayPort 1.2 limits maximum single‑monitor resolutions and refresh rates compared with TB4 docks. TechRadar and PCWorld suggest the TS3 Plus remains good value if you specifically want its mix of ports and don’t need TB4 functionality. techradar.com

In short, you buy a lot of connectivity for a modest price if your workflow matches the TS3 Plus’ strengths; if you need future‑proofed USB4/TB4 features or full modern multi‑monitor capability, a newer dock costs more but addresses those limitations. laptopmag.com

The TS3 Plus’ main limitations are tied to its Thunderbolt 3-era design. Display output is via DisplayPort 1.2, which constrains high‑resolution and high‑refresh monitors and means many HDMI displays need an active DP→HDMI adapter. Reviewers and user reports have repeatedly highlighted this practical friction for users with HDMI-only monitors. If you expect to drive two or three modern high‑resolution displays at high refresh rates, the TS3 Plus will be the bottleneck. pcworld.com

Another realistic downside is platform variability. Several reviews observe that the dock’s behaviour differs across Windows laptops and MacBooks; Mac compatibility tends to be smoother while some Windows machines show quirks with power delivery, display passthrough or port allocation. Finally, the TS3 Plus is a compact, passively cooled aluminium block and some users note it runs warm under load — not a failure mode, but something to be aware of in a hot environment. techradar.com

None of these are unique to CalDigit, but they matter when deciding between keeping a TS3 Plus and spending more on a TB4/USB4 dock that better matches current laptop designs. laptopmag.com

The TS3 Plus list price you gave is the starting point; real‑world cost rises once you add necessary extras. A high‑quality Thunderbolt 3 cable (active if you need full 40Gbps at longer lengths) typically costs USD 20–60. If your displays are HDMI‑only you’ll likely spend another USD 15–40 on an active DisplayPort‑to‑HDMI adapter to avoid compatibility headaches reviewers described. For photographers the SD UHS‑II slot is built‑in — but fast SD cards (UHS‑II) are another USD 30–200 depending on capacity. caldigit.com

You should also factor any replacement power adapters if your laptop expects more than what the dock supplies; CalDigit specifies up to 87W (model dependent), and some Windows 15–16 inch laptops may still need their own charger during heavy loads. TechRadar and PCWorld recommend checking your laptop’s charging draw and, if necessary, planning for a second charger. Finally, keep an eye on warranty and potential replacement costs if you buy used or open‑box units. macworld.com

All told, a typical buyer will spend an extra USD 50–100 on cables and adapters to get the most reliable multi‑monitor and peripheral setup, bringing the total effective cost closer to what some competing TB4 docks charge up front. techradar.com

The CalDigit TS3 Plus still makes sense if you want lots of ports, an integrated UHS‑II SD reader and up to 87W host charging for roughly USD 209.99. It remains a compact, well‑built dock with a practical port layout that Mac users in particular will appreciate, as multiple outlets and Mac‑focused reviews have emphasised. caldigit.com

However, it is an older Thunderbolt 3 design and that shows in display bandwidth and platform variability. If your priorities are the maximum display resolutions/refresh rates, guaranteed cross‑platform behaviour on the latest Windows laptops, or the additional features of Thunderbolt 4/USB4, consider paying more for a modern TB4 dock. TechRadar and PCWorld both recommend weighing those trade‑offs rather than assuming parity between TB3 and TB4 docks. techradar.com

In short: buy the TS3 Plus if its port mix and SD slot solve your day‑to‑day needs and you primarily use a Mac; if you need future‑proof display bandwidth or the broadest Windows compatibility, budget for a Thunderbolt 4/USB4 alternative. laptopmag.com