NZXT Internal USB Hub 3
- 4 USB 2.0 ports added inside the case
- 480 megabits per second data rate
- SATA power connection
- Magnetic body plus 3M dual lock tape
- Desktops only
- Plug and play setup
- 2 Years warranty
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A small internal hub that adds four connections inside a desktop for cooling and lighting accessories. It runs at the older, slower standard, so it suits low-bandwidth gear rather than fast storage.
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ASIN: B08L8VJS3ZModel: AC-IUSBH-M3Category: USB Hubs
Overview
A magnetic body and dual lock tape let this hub tuck away out of sight, and a SATA power connection supplies it. It adds four USB connections for devices such as all-in-one liquid coolers, fan controllers and lighting accessories.
Choose it when the motherboard has run out of internal connections and more accessories must be added. The limit is speed and reach: data moves at a modest rate, and the hub only serves the inside of a desktop.
Who it's for
A PC builder with an all-in-one cooler, a fan controller and lighting all competing for connections will use the extra ports. People who want fast external drives, or who own a laptop, need a different kind of hub.
Pros and cons
- Four added ports
- Plug and play
- SATA power connection
- Tape mounting included in design
- Older, slower USB standard only
- Desktop cases only
- Needs a free SATA power lead
- Motherboard connection type not listed
Performance notes
The hub shares one upstream connection among all its ports, so devices on it split the available bandwidth. Low-bandwidth gear such as lighting and fan controllers uses little of it. The magnet and the tape hold the hub to the case interior, and power comes from a SATA connector instead of the motherboard.
Specifications
| Brand | NZXT |
|---|---|
| Model | AC-IUSBH-M3 |
| Dimensions & fit | |
| Item dimensions | 5.04"L x 4.37"W x 1.02"H |
| Weight | 3.84 ounces |
| Power & efficiency | |
| Power connection | SATA |
| Construction & materials | |
| Enclosure | Plastic |
| Color | Black |
| Compatibility & installation | |
| Interface | USB, USB 2.0 |
| Compatible devices | Desktops |
| Warranty & support | |
| Warranty | 2 Years |
| Other details | |
| Number of ports | 4 |
| Data transfer rate | 480 megabits per second |
| Features | Built-in magnet |
| TRULY COMPACT | Works great with any PC and designed to be easily hidden away. |
Frequently asked questions
How big is the NZXT Internal USB Hub 3 AC-IUSBH-M3?
The listing gives 5.04"L x 4.37"W x 1.02"H and 3.84 ounces, so it needs a small flat spot inside the case.
How does the NZXT Internal USB Hub 3 mount?
The description says it has a magnetic body and uses 3M dual lock tape, and that it is designed to be tucked away.
Is the NZXT AC-IUSBH-M3 a high-speed USB hub?
No. The 3 in the name is the product generation. The listing gives USB 2.0 ports at 480 megabits per second.