The CalDigit TS4 is the better desk dock. With 18 ports and 98W of charging power, it turns a single Thunderbolt cable into a full workstation. The OWC Thunderbolt Go Dock is the better portable dock — its built-in battery lets you hot-swap between locations without losing display connections, which is genuinely game-changing for mobile workers. Both are excellent Thunderbolt 4 docks, and neither is a bad choice. It comes down to how you work.
We spent three weeks testing these docks side by side with a 14-inch MacBook Pro (M3 Pro), a 16-inch MacBook Pro (M3 Max), and a Lenovo ThinkPad X1 Carbon. We ran dual 4K monitors, tested sleep/wake cycles, hot-plugged peripherals during video calls, and deliberately stressed both docks to find their limits. Here is what we found.
| Specification | CalDigit TS4 | OWC Thunderbolt Go |
|---|---|---|
| Street Price | $259–$289 | $249–$279 |
| Total Ports | 18 Wins | 11 |
| USB-A Ports | 5 | 2 |
| USB-C Ports | 3 | 1 |
| Thunderbolt 4 Ports | 3 (1 host + 2 downstream) | 2 (1 host + 1 downstream) |
| HDMI | 1 (HDMI 2.0) | 1 (HDMI 2.0) |
| DisplayPort | 1 (DP 1.4) | 0 |
| Ethernet | 1 (2.5 Gigabit) | 1 (1 Gigabit) |
| SD Card Slot | SD + microSD (UHS-II) | SD (UHS-I) |
| Audio Jack | Front + Rear (3.5mm combo) | 1 (3.5mm combo) |
| Max Display Support | Dual 4K@60Hz or 1x 8K@30Hz | Dual 4K@60Hz |
| Laptop Charging | 98W | 96W |
| Dimensions | 5.4 × 3.1 × 1.6 in | 4.9 × 2.8 × 1.2 in |
| Weight | 14.1 oz (400g) | 11.3 oz (320g) |
| Built-in Battery | No | Yes Unique |
The CalDigit TS4 is the port king. With 18 total ports — including five USB-A, three USB-C, three Thunderbolt 4, an HDMI, a DisplayPort, 2.5Gb Ethernet, dual card readers, and two audio jacks — it can handle just about anything you throw at it. During testing, we had a mechanical keyboard, a mouse, a webcam, an external SSD, a wired headset, a microSD card, and dual monitors all connected simultaneously. We still had open ports.
The OWC Thunderbolt Go Dock offers 11 ports, which is respectable but noticeably more limited. Two USB-A, one USB-C, two Thunderbolt 4, HDMI, Gigabit Ethernet, an SD slot, and an audio jack. We found ourselves occasionally reaching for a small USB hub when we needed to plug in a flash drive while other accessories were connected. Not a dealbreaker, but you feel the constraint in a way you never do with the CalDigit.
If your desk has a permanent setup with multiple peripherals, the CalDigit wins this category decisively. If you travel light — a monitor, keyboard, and maybe one or two accessories — the OWC has enough ports for most people.
Both docks handle dual 4K@60Hz without any issues, which is what the vast majority of users need. We tested with two Dell U2723QE monitors and both docks drove them flawlessly — no flickering, no color banding, full resolution at a smooth 60Hz refresh rate.
The CalDigit has a slight edge in display flexibility thanks to its dedicated DisplayPort 1.4 output alongside HDMI. This means you can connect one monitor via HDMI and another via DisplayPort without needing any adapters. With the OWC, your second display needs to connect through the downstream Thunderbolt 4 port, which typically means a USB-C-to-DisplayPort or USB-C-to-HDMI adapter.
Both docks support daisy-chaining Thunderbolt displays, which we tested with an Apple Studio Display daisy-chained to a LG UltraFine 5K. Sleep/wake cycles were consistently reliable on both — displays came back within 2–3 seconds after opening the MacBook lid, and we saw zero instances of scrambled resolutions or phantom displays over our three-week test.
The CalDigit TS4 delivers 98W of power to your laptop. The OWC Thunderbolt Go delivers 96W. In practice, both of these numbers are close enough to be interchangeable for most laptops.
With the 14-inch MacBook Pro (M3 Pro), both docks kept the battery topped up even during heavy workloads — compiling code in Xcode while driving dual 4K displays. No issues. The 14-inch only draws about 67W under load, so both docks have plenty of headroom.
The 16-inch MacBook Pro is where the difference matters. Apple's 16-inch (M3 Max) can draw up to 140W under peak load. The CalDigit's 98W kept it charged during sustained but not peak workloads — think normal development, video editing in Final Cut, or running multiple VMs. During a sustained Blender render that pegged all GPU cores, the battery slowly trickled down even while plugged in, but at a very slow rate (about 3% per hour). The OWC's 96W behaved nearly identically. Neither dock fully replaces the 140W MagSafe adapter for the most extreme workloads on the 16-inch, but both handle real-world professional workflows just fine.
This is where the OWC Thunderbolt Go Dock does something no other Thunderbolt dock on the market can do: it has a built-in battery.
Why does that matter? Imagine you are working at your desk with dual monitors, a keyboard, a mouse, and a webcam all connected through the dock. You need to grab your laptop and head to a conference room for a meeting. With a traditional dock, you unplug the Thunderbolt cable, all your displays go dark, all your peripherals disconnect, and when you come back and plug in again, macOS needs to re-detect everything, reposition your windows, and reconnect your peripherals. It works, but it is a minor disruption every single time.
With the OWC's built-in battery, the dock stays powered for several minutes after you unplug your laptop. Your monitors stay in standby (not fully disconnected), and when you plug back in, everything snaps back almost instantly. During our testing, we unplugged the MacBook for up to four minutes and reconnected it — the displays came back in under a second, and every window was exactly where we left it. The dock's battery keeps the Thunderbolt controller and peripherals alive while you are away.
For someone who moves between their desk and a meeting room multiple times a day, this is a genuinely useful feature. For someone whose laptop stays docked all day, it is irrelevant. Know your workflow.
The CalDigit TS4 is built from aluminum with a dark grey anodized finish. It looks and feels premium — the kind of accessory that belongs on the same desk as a Pro Display XDR. The weight gives it a planted feel; it never slides around when you plug in cables. Ports are distributed across the front and rear, with the most frequently accessed ports (SD slots, front USB-C, audio jack) up front where they should be.
The OWC Thunderbolt Go Dock uses a high-quality polycarbonate (plastic) chassis. It looks fine — clean lines, a compact footprint — but it does not have the same "premium desk accessory" feel as the CalDigit. That said, the lighter weight is a genuine advantage if you toss the dock into a bag and carry it with your laptop. At 11.3 ounces versus the CalDigit's 14.1, the difference is noticeable when you are packing a messenger bag for a day of on-site meetings.
Both docks use a single Thunderbolt 4 cable for the host connection, and both include the cable in the box. CalDigit includes a 0.8m cable; OWC includes a 0.7m cable. Neither is long enough for under-desk routing, so plan on buying a longer Thunderbolt 4 cable if your dock will live behind a monitor.
Thunderbolt docks run warm. That is normal — they are pushing a lot of data and power through a small enclosure. But there is warm, and then there is hot.
The CalDigit TS4 ran consistently cooler in our testing. After four hours of dual 4K output, charging a 14-inch MacBook Pro, and transferring files to an external SSD, the CalDigit's aluminum chassis measured 38°C (100°F) on the surface. Warm to the touch but completely comfortable. The aluminum acts as a passive heatsink, which is one of the benefits of the metal construction.
The OWC Thunderbolt Go Dock ran warmer under the same conditions — about 44°C (111°F) on its warmest spot. Not concerning from a reliability standpoint, but noticeably warmer when you touch it. The plastic chassis does not dissipate heat as effectively as aluminum. In three weeks of daily use, neither dock exhibited any thermal throttling, disconnections, or stability issues.
We also stress-tested both docks with rapid sleep/wake cycles — opening and closing the MacBook lid 50 times over an hour. Both docks reconnected all peripherals and displays correctly every single time. We saw zero kernel panics, zero phantom display issues, and zero USB device dropouts. This is a real improvement over the early Thunderbolt 3 dock era, where sleep/wake reliability was genuinely problematic.
If we had to pick just one? For most people who work primarily at a single desk, the CalDigit TS4 is the better investment. It has more ports, runs cooler, charges slightly faster, and feels more premium. But the OWC is not a consolation prize — it is genuinely the better choice for a specific and increasingly common workflow. If you see yourself physically moving your laptop multiple times a day, the battery feature alone justifies the OWC.
We track prices across major retailers so you do not have to. Here are the current best prices for both docks:
18-port Thunderbolt 4 dock · 98W charging · Aluminum
11-port Thunderbolt 4 dock · 96W charging · Built-in battery
Thunderbolt dock prices tend to drop during Amazon Prime Day (July) and Black Friday. If you are not in a rush, setting price alerts on CamelCamelCamel or Honey can save you $30–50 on either dock. The CalDigit TS4 has dipped as low as $229 during past sales events.
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