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Small black USB stick with five screw terminals on the end

UOTEK

UOTEK UT-8851 USB to TTL Converter 5-pin Terminal Block

SKU CH-479G-6V3H8

Converts USB to TTL via a 5-pin terminal block with 300-921600 BPS baud rate and plug-and-play operation

  • First connector1x USB 2.0 male
  • Second connectorTTL 5-pin terminal block
  • Plug-and-play USB 2.0 to TTL conversion with zero-delay automatic transceiver
  • Wide 300 to 921600 BPS baud range covers legacy and modern serial devices
  • Power and data-flow LEDs give instant visual status of link activity
  • Works across Windows XP through 10, CE, Mac and Linux without driver hassles
  • 5-pin terminal block provides secure screw-terminal wiring for industrial or hobby use

USB to TTL Converter

The UOTEK UT-8851 converts USB signals to TTL levels for serial communication tasks. It connects a USB 2.0 port to a 5-pin terminal block. The adapter supports USB 1.0, 1.1 and 2.0 standards. It is designed for engineers and hobbyists working with microcontrollers or embedded systems.

Build Integration

The device draws power from the USB bus and requires no external supply or jumper configuration. A male USB 2.0 connector plugs directly into the host while the terminal block accepts wire leads for TX, RX, GND, VCC and an extra pin. Status LEDs show power and data activity. The automatic transceiver handles direction control without handshake signals.

Target User

This suits developers debugging firmware, flashing bootloaders or linking serial peripherals to modern computers lacking native COM ports. Broad OS support covers Windows, Mac and Linux platforms. Buyers needing galvanic isolation, higher voltage logic levels or a DB9 interface should look at other products.

How it compares

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

Price $15.99
Pricier than about 55% of the 1,430 comparable items (median $14.99).

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Specifications

Product
Brand nameUOTEK
Model nameUT-8851
Ports & slots
First connector1x USB 2.0 male
Second connectorTTL 5-pin terminal block

Questions about this item

What is the maximum baud rate the UT-8851 can sustain during continuous data transfer?

The converter supports baud rates up to 921600 BPS for point-to-point communication.

Does the adapter generate noticeable heat or fan noise when powered all day?

It has no fan and only indicator LEDs, so heat and audible noise are negligible during extended use.

Which operating system driver must already be installed for the device to be recognised?

It works with Windows 8/10/XP/Vista/7/8.1/10/CE, Mac and Linux without extra driver installation.

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