CalDigit SOHO Dock Review: Compact One-Monitor Hub for MacBook Air

Verdict

The SOHO Dock is a small, bus-powered hub that CalDigit documents at 4K 60Hz for one monitor on a Mac. Its second video port only mirrors on macOS. It suits a one-monitor desk or a laptop bag, or an M4 or M5 Air where the second monitor gets its own cable from the Mac's other port. Its low score reflects our two-monitor focus.

Pros

One monitor up to 4K 60Hz on a Mac, per CalDigit, when the USB-C port supports DisplayPort 1.4.
Up to 90W pass-through charging to the laptop.
Small: 93 × 64.3 × 19 mm and 0.09 kg, with a removable 0.5m cable.
10Gb/s USB-C and USB-A data ports, plus SD and microSD UHS-II.

Cons

Two monitors mirror on macOS. Extended dual display is Windows only.
No Ethernet, and only two USB data ports.
Charging needs your own USB-C charger.
CalDigit does not say whether drivers are needed.

Best for: A one-monitor MacBook Air desk or travel bag, or an M4 or M5 Air whose second monitor connects straight to the Mac.
Skip if: You want two extended monitors through one hub, or you need Ethernet.

View on CalDigit

Score breakdown

The overall score is the weighted average of six criteria, each scored 0 to 10 from documentation. See the rubric

Mac compatibility documentedWeight 30%6/10

Lists macOS 10.13.6 or later and separates Mac and PC display behavior. No chip-level detail. Source 1
Two monitors on MacBook AirWeight 25%2/10

One extended 4K 60Hz display on macOS. Dual extended is Windows only, and two monitors on a Mac are mirrored. Source 1
Display modesWeight 15%6/10

One monitor at 4K 60Hz on Mac, if the USB-C port supports DisplayPort 1.4. Source 1
ChargingWeight 10%8/10

Up to 90W pass-through to the laptop, from a USB-C charger you supply (up to 100W in). Source 1
Ports and connectivityWeight 10%4/10

4 downstream ports: USB-C 10Gb/s, USB-A 10Gb/s, SD and microSD. Source 1
Software and limitsWeight 10%5/10

The page does not say whether software is needed. Source 1

Works with your MacBook Air

CalDigit documents the same macOS behavior for every Mac: one extended display, with a second monitor mirrored. On an M4 or M5 Air, Apple's two-display limit lets a second monitor run from the Mac's other Thunderbolt port instead.

MacBook Air	Apple's native limit	What CalDigit documents	Two monitors through this dock
M1	1 external display	One extended display on macOS; a second monitor mirrors	No, second monitor mirrors Not supported
M2	1 external display	One extended display on macOS; a second monitor mirrors	No, second monitor mirrors Not supported
M3, lid open	1 external display	One extended display on macOS; a second monitor mirrors	No, second monitor mirrors Not supported
M3, lid closed	2 external displays, macOS Sonoma 14.3 or later	One extended display on macOS; a second monitor mirrors	No, second monitor mirrors Not supported
M4	2 external displays, lid open or closed	One extended display on macOS; a second monitor mirrors	Not through the hub. A second monitor can use the Mac's other port. Apple documentation
M5	2 external displays, lid open or closed	One extended display on macOS; a second monitor mirrors	Not through the hub. A second monitor can use the Mac's other port. Apple documentation

Specifications

As published by CalDigit. Values in this table are the maker's, not measurements.

Connection to Mac	USB-C 10Gb/s host port. Includes a removable 0.5m USB-C cable.
Video outputs	1 × DisplayPort 1.4, 1 × HDMI 2.0b
Documented modes on Mac	One display up to 4K 60Hz. Two displays mirrored at 4K 60Hz. Dual extended is not supported on macOS.
Host charging	Up to 90W pass-through to the laptop (up to 100W PD into the dock). Supports USB-C chargers from 18W.
Downstream ports	1 × USB-C 10Gb/s data, 1 × USB-A 10Gb/s, SD 4.0 UHS-II, microSD UHS-II. A separate USB-C port takes power in.
Power	Bus-powered or powered from a USB-C charger
System requirement	macOS 10.13.6 or later
Size and weight	93 × 64.3 × 19 mm, 0.09 kg
Price	Check current price on the maker's site