Our take
A fixed-installation USB 2.0 hub with screw-lock connectors and external power, with a conflicting bus-power field that needs confirmation.
Fixed lab, cabinet or equipment installations needing secured USB 2.0 Type-A connections and an external adapter, where USB-B cabling and the listed 500mA port limit are suitable..
Buyers who need USB 3.x speeds, USB-C host charging, HDMI, Ethernet, card readers or a confirmed bus-powered operating mode.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Exact USBG-4SU2MLA model and four screw-lock downstream ports are documented.
- Metal housing and mounting flanges suit fixed installations.
- A 5V/4A adapter is listed in the package.
What to weigh up
- USB 2.0 has an interface ceiling of 480Mbps and upstream is USB-B.
- Coolgear's bus-power descriptions conflict.
- The historical Amazon ASIN is not verified as the current offer.
Specifications and exact model details
The key details
| Model covered | USBG-4SU2MLA |
|---|---|
| Host connector | USB-B upstream host connection. |
| USB 3.x data ports | Four downstream USB 2.0 USB-A ports up to 480Mbps. |
| Installation | Metal industrial housing with surface or wall-mountable flanges; mounting screws are not listed in the package. |
| Hub power | Coolgear lists an included 5V/4A power adapter; its bus-power wording conflicts. |
| Host charging | This USB-B data hub does not provide USB-C PD charging to a host. |
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
Choose it for a fixed, secured installation
USBG-4SU2MLA is a metal four-port USB 2.0 hub intended for installations where cables should stay attached. The official product page identifies one upstream USB-B connection and four downstream USB-A ports, with screw-lock support on the connectors. It has a metal chassis and mountable flanges for wall or surface use, which can suit a lab bench, equipment cabinet or automation setup more naturally than a small travel dongle. The mounting screws themselves are not listed in the package contents, so plan the mounting hardware separately. This is a specialized physical design for stable cabling; it adds no display, Ethernet or card-reader functions.
Keep expectations at USB 2.0 speeds
The hub is specified for USB 2.0 up to 480Mbps and backwards compatibility with USB 1.1. That is adequate for many keyboards, mice, scanners, printers and lower-bandwidth control devices, but it is slower than USB 3.x hubs for large file transfers. The 480Mbps figure is the interface maximum, not a promised sustained transfer rate. If the connected devices move sizable files or depend on fast storage, a USB 3.0 or newer model is likely a better fit. The model has screw-lock downstream ports, so its security-oriented connector choice should be matched with cables that support that locking feature.
Review the power information carefully
Coolgear lists a 5V/4A adapter in the package and describes self-powered use for devices that need more power on the four downstream ports. Its page also says the hub can operate bus-powered for low-power devices, but a separate product-spec field says Bus Power Support: No. The product page therefore conflicts about that mode. It lists 500mA per USB port and 10W maximum downstream power in the specification table. If your installation depends on operating without the adapter or powering particular devices, confirm the intended configuration with the manufacturer. The included adapter is the clearest supported way to power the hub, but its presence does not mean each port can exceed its listed current.
Plan for Type-B host cabling and screw-lock hardware
The upstream connector is USB Type-B, not USB-C or a fixed laptop-style pigtail. The package list includes USB-A-to-B cables and a 5V/4A adapter, although the page's two cable entries use slightly inconsistent wording. The hub can sit away from the computer if the selected cable reaches, but verify cable length and screw-lock fit for the host and each peripheral. The source describes a 5.98-inch housing and optional flange dimensions; it also says surface mounting screws are not included. These details matter when adding the hub to equipment that vibrates or has restricted access. Confirm the product's port orientation and cable clearance from the drawings before installation.
Search the exact model instead of assuming the old ASIN is current
Coolgear's official product page identifies USBG-4SU2MLA and includes an Amazon retailer link, but it does not show B00KYWDNSK as the current Amazon ASIN. The Amazon page itself was not readable during this review. The tagged search includes the model, industrial design and historical ASIN so the reader can compare the actual result against the four USB 2.0 screw-lock ports, Type-B upstream connection and external power input. Confirm the model printed on the chosen product and the included supply before ordering. This review uses manufacturer specifications and makes no personal-test, price, stock or customer-review-summary claim.
Who should consider it
Consider USBG-4SU2MLA if you need four secured USB 2.0 Type-A connections in a metal hub that can be mounted near industrial or lab equipment. It is a poor fit if you need USB 3.x transfer rates, USB-C inputs, display/network/card functions or a confirmed bus-powered mode. The exact model is well documented, but the bus-power wording conflicts and the historic Amazon offer remains unverified.
Compare for your needs
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Before you buy
How many downstream ports does it have?
Four Type-A USB 2.0 ports with screw-lock connectors.
Does it include external power?
Coolgear lists a 5V/4A adapter in the package.
Can it run bus-powered?
The product page conflicts about bus power; confirm with Coolgear before relying on it.
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.
- Coolgear official USBG-4SU2MLA product page ↗ — checked October 5, 2026.
- Coolgear official USBG-4SU2MLA page; model, connector layout, interface, power, package and conflicting power fields ↗ — checked October 5, 2026.
- USBgear product record; model, connector, data-rate and power-mode details ↗ — checked October 5, 2026.
- Historical Amazon ASIN page; current item detail 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.