Our take
ST-UCMBAM may suit a USB-C user who needs wired Ethernet, card access, mixed USB data, and one display or mirrored displays in one adapter. It is a poor fit when two independent external displays or a confirmed laptop charging output is essential. The official guides support the model and feature family, but the historical Amazon ASIN remains unmapped and no current offer is claimed.
A USB-C user who needs wired Ethernet, both card formats, mixed USB data and one display or mirrored displays, and can verify host video support and power delivery needs..
Skip it if you need two independent external displays, charging from the USB data ports, guaranteed 100W delivered to the host or a verified match to B0BS8JSP2F.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Officially documented model ST-UCMBAM.
- Combines Ethernet, HDMI/VGA, two card readers and USB data.
- Includes both shorter and longer host-cable options.
What to weigh up
- Display use is limited to one screen or mirrored output.
- USB data ports do not charge devices.
- A 100W PD input rating does not establish delivered laptop wattage.
Specifications and exact model details
The key details
| Model covered | ST-UCMBAM |
|---|---|
| Host connector | USB-C host |
| USB 3.x data ports | Two USB-A and one USB-C data port |
| Installation | Detachable short and long host cables |
| Hub power | USB-C PD input up to 100W listed |
| Host charging | Delivered host charging wattage unspecified |
Performance figures are manufacturer claims. Source checked October 4, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
A broad port set for a compatible USB-C device
ST-UCMBAM groups several workstation and travel connections around one USB-C host link: HDMI and VGA outputs, Gigabit Ethernet, USB-C and USB-A data, SD and microSD, alongside a separate USB-C charging input. Satechi also publishes compatibility information for MacBook, iPad, iPhone, Mac mini, iMac and selected Windows, Chromebook and Android devices. Treat that as a list to check, not a promise that every USB-C device supports every adapter function. In particular, video requires a host port with video output support. This combination can be useful when the buyer needs a wired network jack and older peripheral/card connections in one attachment, but it is larger in function than a simple four-port USB data hub.
Carry the connection cable that fits the setup
Satechi's guide describes two included host cables: a shorter cable that slides into the adapter and a longer cable for dock-style use. This gives the owner two documented ways to place the hub, rather than depending on a single fixed lead. The guide does not state exact cable lengths, so confirm dimensions if reach matters behind a monitor or across a desk. The adapter connects to a USB-C Power Delivery or Thunderbolt 3 port. Its multiple downstream connectors do not eliminate the need to check the host port, device layout and operating-system compatibility. No conclusion about durability, flexibility under strain, or everyday performance is made here because the sources are product documentation rather than hands-on testing.
Plan one display or a mirrored pair
The quick-start guide rates HDMI up to 4K at 60Hz and VGA up to 1080p at 60Hz. It says to connect one display at a time, or to connect both for mirrored output. That is a specific use limit: the guide does not describe using HDMI and VGA as two independent extended desktop displays. A buyer who wants a second extended screen should not infer that behavior from the adapter's two video sockets or nine-in-one marketing name. The connected computer also needs a compatible USB-C video signal; Satechi lists Thunderbolt, USB4 and USB-C with DisplayPort Alt Mode in its optimal-use requirement. Check the laptop's own display support and monitor input before choosing this adapter.
Separate data, charging and wired-network roles
The two USB-A and one USB-C data connections expand peripheral access, but Satechi states that those data ports do not charge devices or output video. The adapter's separate USB-C PD socket is a charger input, not another general data socket. For wired networking, the guide lists an Ethernet connection up to 10/100/1000Mbps. The support page further cautions that only one bus-powered device should be connected at a time. That note matters for a buyer who expects to attach several unpowered storage devices together. The guide does not document independent port bandwidth or performance with every port occupied, so choose it for the documented port mix rather than assumed simultaneous-load behavior.
Read the power rating as an input limit, not a laptop guarantee
The guide says to connect a PD charger to the adapter's USB-C PD charging port and gives a maximum rating of 100W. The available material does not state how much power reaches a particular laptop after adapter consumption or establish a single delivered-output figure for all use cases. A buyer with a high-wattage laptop should verify the current product's full power specification and use a suitable charger and cable. The distinction between power input and the separate USB-C/USB-A data outputs also helps prevent choosing this hub for charging multiple accessories. This profile does not claim current price, stock, an exact Amazon listing or measured charging performance.
Compare for your needs
Find the USB hub that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
Does ST-UCMBAM identify an actual Satechi model?
Yes, the manufacturer's support pages use that model.
Can HDMI and VGA drive two independent extended screens according to the guide?
No; the guide says one display at a time or mirrored.
Is B0BS8JSP2F verified as this adapter?
No, use the tagged exact-model search.
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 ST-UCMBAM quick-start and compatibility guides ↗ — checked October 4, 2026.
- Official quick-start guide: identity, ports, detachable cables, PD input, display, Ethernet, data and cards ↗ — checked October 4, 2026.
- Official compatibility guide: supported devices, video support requirement and one-device/display constraints ↗ — checked October 4, 2026.
- Historical Amazon ASIN did not map to ST-UCMBAM ↗Paid link · We may earn a commission. — checked October 4, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.