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Compact micro USB hub with one male plug one female port and two USB A sockets a slide switch and a short flat cable

Hetai Tech

Hetai Tech 3-in-1 Micro USB Hub OTG Adapter Cable

SKU CH-78EP-3909D

A 3-in-1 Micro USB hub adds two USB 2.0 ports and a charge/OTG switch to tablets and phones

  • Connection typeMicro USB to USB A
  • Connect mouse and keyboard simultaneously via two USB 2.0 ports
  • Charge your tablet while using OTG with the dedicated switch
  • Transfer photos and files directly from a flash drive
  • Compact 10 cm cable fits in any pocket or bag
  • Works with Dell Venue 8 Pro and Galaxy Tab 10.1

3-in-1 Micro USB OTG Hub

The Hetai Tech adapter adds two USB 2.0 ports and a charging port to phones and tablets that support USB On-The-Go. It suits travelers who want to connect a keyboard, mouse, flash drive or card reader without carrying a bulky dock. The compact cable turns a single Micro USB socket into a small workstation wherever you are. Not for users who need to power a mechanical hard drive or charge the host device while accessories are active.

Sustained multi-device operation

Two peripherals can draw power simultaneously from the hub while the switch sits in the OTG position. The Micro USB female port supplies power only to the hub itself, so the host phone or tablet does not charge during data sessions. Extended file transfers between a flash drive and the mobile device remain stable because the hub does not negotiate host charging at the same time. Not for workflows that require continuous host charging while accessories run.

Micro USB OTG switching constraint

A physical toggle selects either OTG data mode or charge-only mode, never both together. When set to Charge the hub passes power to the host but disables the two USB 2.0 ports; when set to OTG the ports work but the host battery receives no current. Buyers who must keep their tablet topped up while typing on a keyboard or copying photos will find this limitation decisive.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $15.99
Pricier than about 55% of the 15,227 comparable items (median $14.99).

Specifications

Ports & slots
Connection typeMicro USB to USB A

Questions about this item

Does the Micro USB hub draw noticeable power from the phone or tablet during all-day use?

The hub is passive and draws minimal power from the host device; when the switch is set to OTG mode the Micro USB port cannot charge the phone, so battery impact is limited to the connected peripherals.

What must the buyer already own for this adapter to function?

You need a tablet or smartphone that supports USB OTG and has a Micro USB port, plus the USB peripherals such as a mouse, keyboard or flash drive you want to connect.

Will this hub work alongside an older USB 2.0 flash drive or mouse I already have?

Yes, the two female ports are USB 2.0 and accept legacy USB 2.0 devices like flash drives, mice or keyboards, allowing them to operate simultaneously with the host.

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