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Small grey USB-C splitter with two ports on a short cable

Seminer USB-C OTG Adapter 100W PD Dual USB-C Gray

SKU CH-Z8M5-J4XWS

Splits one USB-C port into 100W PD charging plus a 10Gbps data connection for iPhone 15, MacBook and Galaxy S22/S23

  • TypeUSB Type C
  • Color1in2-dual-typec-gray
  • Changer TypeUSB Type C
  • SpecificationsiPad, iPhone 15, MacBook, Samsung Galaxy Tab, Samsung Galaxy
  • Connector AUSB Type C
  • Connector BUSB Type C
  • Charge at up to 100W (20V 5A) via the dedicated PD port
  • Transfer files at 10Gbps through the USB 3.1 data port
  • Connect two USB-C devices simultaneously with the 1-in-2 splitter design
  • Works with iPhone 15, Galaxy S22/S23, MacBook, Pixel 6/5 and more
  • Supports audio playback and calls using USB-C headphones

What the adapter does

The Seminer USB-C OTG adapter splits one USB-C port into two, giving a 100W Power Delivery charging port and a USB 3.1 data port rated at up to 10Gbps. It targets owners of iPhone 15, MacBook, Samsung Galaxy S22 or S23, Pixel 6 or 5, Chromecast with Google TV 2020, Surface Book and similar Type-C devices who need simultaneous charging and peripheral access. The gray housing matches most modern laptops and phones. Buyers who require more than two ports or legacy USB-A connectors will need a different solution.

Thermals noise and power draw

The adapter delivers up to 100W at 20V 5A through its dedicated PD port while the data port handles high-speed transfers. No active cooling is present, so heat dissipation relies on the metal shell and cable length during sustained loads. Power draw scales with the attached charger and device; the splitter itself adds negligible overhead. There are no fans or moving parts, so operation stays silent in normal use.

Build quality and daily connectors

A compact aluminum-alloy shell protects the internal PCB and resists wear from frequent insertion. Both female ports are clearly marked for charging or data, reducing the risk of mis-plugging. The short pigtail cable keeps the assembly tidy on a desk or in a bag but limits reach to nearby ports. Users who need longer reach or right-angle strain relief should consider a separate extension cable.

Highlights

  • Charge at up to 100W (20V 5A) via the dedicated PD port
  • Transfer files at 10Gbps through the USB 3.1 data port
  • Connect two USB-C devices simultaneously with the 1-in-2 splitter design
  • Works with iPhone 15, Galaxy S22/S23, MacBook, Pixel 6/5 and more
  • Supports audio playback and calls using USB-C headphones

Specifications

BrandSeminer
Model1in2-dual-typec-gray
Part Number1in2-dual-typec-gray
TypeUSB Type C
Color1in2-dual-typec-gray
Changer TypeUSB Type C
SpecificationsiPad, iPhone 15, MacBook, Samsung Galaxy Tab, Samsung Galaxy S20/S120+/Note10, PixelBook, Google Pixel 6/5, Google Chromecast with Google TV, Surface Book
Connector AUSB Type C
Connector BUSB Type C
FeaturesMultidevice compatibility
Package Quantity1

Questions about this item

How do I plug the Seminer USB-C OTG adapter into my iPhone 15 and connect both a charger and a USB-C peripheral?

Insert the adapter's single USB-C plug into the iPhone 15 port, then connect the power cable to the port marked for 100W PD charging and the peripheral to the USB-C 3.1 data port; the logos on the housing show which is which.

Will the USB-C 3.1 port on this adapter wear out or need replacement after frequent plugging and unplugging?

The USB-C 3.1 port is rated for standard mating cycles; if it becomes loose or data drops to below 10Gbps, replace the adapter rather than attempting a repair.

What is the first limit I will hit when using the 100W PD charging port continuously with a MacBook?

The 100W (20V 5A) power ceiling is the first limit; sustained loads above that will cause the adapter to throttle or disconnect.

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