Our take
ST-CMBPM is a Mac-focused adapter for users who can connect through two USB-C ports and need one HDMI output, USB data, card readers, and charging. Check the Mac chip and the specific USB-C port roles before relying on its display combination.
A compatible MacBook owner who can spare two USB-C ports and needs HDMI, USB data, card reading, and up to 87W charging from the separate PD connection..
A laptop with one USB-C port, a Windows computer without confirmed compatibility, or someone needing Ethernet, USB-A charging, or SuperDrive support.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The manufacturer confirms the exact model and space-gray color.
- Port speeds, HDMI mode, and the separate charging connection are documented.
- Mac connector and chip-specific display limits are described by Satechi.
What to weigh up
- Satechi says a Mac with two USB-C ports is required.
- Base M1/M2 and base M3 Macs have the display restrictions stated in the compatibility notes.
- USB-A charging, Apple SuperDrive, and Ethernet are not supported or listed.
Specifications and exact model details
The key details
| Model covered | ST-CMBPM |
|---|---|
| Host connector | USB-C host; Satechi requires a Mac with two available USB-C ports. |
| USB 3.x data ports | Two USB-A and one USB-C data port are listed up to 5Gbps; a separate USB-C connection is listed for up to 40Gbps data. |
| Installation | Direct-attach Mac adapter with HDMI and SD/microSD readers; it is not a universal computer-fit mount. |
| Hub power | No separate hub AC-power input is identified; Satechi recommends one bus-powered device at a time. |
| Host charging | Separate USB-C PD port supports up to 87W charging; input wattage and exact host output vary by setup. |
Performance figures are manufacturer claims. Source checked October 5, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Check the Mac's connector layout before choosing this hub
The ST-CMBPM is a MacBook-oriented adapter that attaches through USB-C, and Satechi's compatibility page says Macs without two USB-C ports are unsupported. That makes host fit the first decision, before counting its downstream connectors. Check the exact laptop model and port spacing, then confirm that the hub can connect without blocking a case or nearby port. Satechi's list includes multiple MacBook Pro and Air generations, but compatible functions may vary by chip. For a Windows laptop or tablet, the checked sources do not establish full compatibility even though the USB-C connector may physically fit.
Choose it for the display mode your Mac can actually run
The manufacturer lists HDMI up to 4K at 60Hz, but host graphics and Apple chipset limits still matter. Satechi says base M1 and M2 MacBooks are limited to one display, while base M3 MacBook Air and Pro support two 4K/60Hz displays only when closed in clamshell mode. Do not read the hub's HDMI specification as a promise of dual external screens on every Mac. If your workspace depends on extending rather than mirroring, check the computer's chip and display-support table alongside the hub's connection requirements.
Separate the two USB-C functions when planning devices
Satechi's port list distinguishes a USB-C data port rated up to 5Gbps from a USB-C PD connection rated up to 40Gbps data and up to 87W charging. The second connection also carries the page's 4K/60Hz video claim. Because the two USB-C sockets have different roles, use the port diagram when connecting storage or a charger. A 40Gbps maximum is a specification ceiling, not a measured result, and charging up to 87W does not guarantee the same wattage reaches every laptop with every charger.
Use the USB-A and card-reader ports within their stated limits
Two USB-A ports are specified at up to 5Gbps, with microSD and SD readers alongside them. Satechi says the USB-A ports do not support charging and do not work with CD readers such as Apple SuperDrive. It also recommends connecting one bus-powered device at a time. If you need a bus-powered optical drive or multiple external storage devices, use the manufacturer's guidance to choose a different arrangement. The rating identifies a supported interface ceiling; it does not state how quickly several connected drives transfer simultaneously.
Keep performance claims separate from the old Amazon listing
The official page identifies model ST-CMBPM and its space-gray finish, but it does not mention B0BV9LMV43. Amazon's detail page was unreadable, so the model-search link is safer than presenting the old ASIN as a verified current offer. Compare the printed code, shade, and USB port panel on any result. This matters because Satechi sells other Pro hubs and multiport adapters with similar names but different Ethernet, card-reader, and USB layouts. This review does not claim personal testing, buyer-review consensus, current price, or stock.
Match the adapter's limits to your desk instead of expecting a full dock
The checked ST-CMBPM feature list includes HDMI, USB, and card reading, but no Ethernet port. It can suit a compatible MacBook with two USB-C ports when you need local peripherals and a display connection, yet it will not replace a wired network adapter if your desk needs one. List the display mode, storage, card formats, and charging rate you need, then compare them with Satechi's model-specific table. The adapter's thin attachment style helps expand ports but does not erase host limitations or supply connections that the model does not list.
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Before you buy
How many USB-A ports are specified?
The ST-CMBPM lists two USB-A data ports, each rated at up to 5Gbps.
Does the checked model page list Ethernet?
No, the model's listed ports do not include an Ethernet jack.
Does 87W prove every host receives 87W?
No. It is a manufacturer maximum for the charging connection, not a guarantee for every setup.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Satechi official Type-C Pro Hub Adapter product page ↗ — checked October 5, 2026.
- Satechi model/color page with port speeds, PD rating, and use notes ↗ — checked October 5, 2026.
- Satechi compatibility article listing supported Macs and dual-USB-C requirement ↗ — checked October 5, 2026.
- Historical Amazon detail page returned a cache miss; current offer not verified ↗Paid link · We may earn a commission. — checked October 5, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.