> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/hardware-products/hardware/engage-devices/ux1-3-4xx-series/ux3xx/ux301-installation-guide/port-pinouts.md).

# Port Pinouts

This section contains port pinout tables for the UX301.

## UX301 Port Pinouts

Refer to the following UX301 port pinout diagrams.

### RS-232 Port (COM1)

{% columns %}
{% column %}
**Connector**

![](/files/qf2adoVHYhQZjvRB86u3)
{% endcolumn %}

{% column %}
**PIN**

1

2

3

4

5

6

7

8
{% endcolumn %}

{% column %}
**Function**

Portpwr (9 to 12 V DC)

NC

NC

GND

RXD

TXD

CTS

RTS
{% endcolumn %}

{% column %}
**Description**

PowerOut, max 1 A

No connection

No connection

Power ground

Receive data

Transmit data

Clear to send

Request to send
{% endcolumn %}
{% endcolumns %}

{% hint style="info" %}
The 10-pin download cable (VPN 26264) connects to the 8-Pin RS-232 port of the device, wherein Pin 2 from the cable corresponds to Pin 1 on the RS-232 port.
{% endhint %}

### UX401 Port

{% columns %}
{% column %}
**Connector**

![](/files/qf2adoVHYhQZjvRB86u3)
{% endcolumn %}

{% column %}
**PIN**

1

2

3

4

5

6

7

8
{% endcolumn %}

{% column %}
**Function**

+5V

Standby

GND

IRQ

SDA1

SCL1

SCLM3

SDAM3
{% endcolumn %}

{% column %}
**Description**

5 V Power

+3, 3 V

Power ground

Motion detector IRQ

I2c LED driver

I2c LED driver

I2c motion detector

I2c motion detector
{% endcolumn %}
{% endcolumns %}

### Ethernet Port (LAN)

{% columns %}
{% column %}
**Connector**

![](/files/qf2adoVHYhQZjvRB86u3)
{% endcolumn %}

{% column %}
**PIN**

1

2

3

4

5

6

7

8
{% endcolumn %}

{% column %}
**Function**

TXD+

TXD-

RXD+

NC

NC

RXD-

NC

NC
{% endcolumn %}

{% column %}
**Description**

Transmit data +

Transmit data -

Receive data +

No connection

No connection

Receive data -

No connection

No connection
{% endcolumn %}
{% endcolumns %}

### USB Pinout (Host Port)

{% columns %}
{% column %}
**Connector**

![](/files/90P1jFPNmHNLrfVoLam9)
{% endcolumn %}

{% column %}
**PIN**

1

2

3

4
{% endcolumn %}

{% column %}
**Function**

+5 V

DATA-

DATA+

GND
{% endcolumn %}

{% column %}
**Description**

5 V USB Power (500 mA)

USB Host Signal -

USB Host Signal +

USB ID pin/Ground
{% endcolumn %}
{% endcolumns %}

### USB Pinout (Client Port)

{% columns %}
{% column %}
**Connector**

![](/files/xldMi4BiKqT7cuJHtfVu)
{% endcolumn %}

{% column %}
**PIN**

1

2

3

4
{% endcolumn %}

{% column %}
**Function**

+5 V

DATA-

DATA+

GND
{% endcolumn %}

{% column %}
**Description**

5 V USB Power

USB Device Signal -

USB Device Signal +

USB Ground
{% endcolumn %}
{% endcolumns %}

### Power Port (DC-in or Printer)

Applies to UX301 STD version.

{% columns %}
{% column %}
**Connector**

![](/files/GIjgAk66lic5NPGi8XMH)
{% endcolumn %}

{% column %}
**PIN**

1

2

3

4

5

6
{% endcolumn %}

{% column %}
**Function**

+24 V

GND

+24 V - Printer

NC

NC

GND - Printer
{% endcolumn %}

{% column %}
**Description**

External power from cable

Power ground

Power to TG-2460H printer

Unused

Unused

Printer ground
{% endcolumn %}
{% endcolumns %}

### Power Port (DC-in or Printer)

Applies to UX301 MDB version.

{% columns %}
{% column %}
**Connector**

![](/files/GIjgAk66lic5NPGi8XMH)
{% endcolumn %}

{% column %}
**PIN**

1

2

3

4

5

6
{% endcolumn %}

{% column %}
**Function**

+DC 9-43 V

GND

WAKE

Slave TX

Slave RX

MDB GND
{% endcolumn %}

{% column %}
**Description**

External power from cable

Power ground

Signal

Slave TX

Slave RX

Ground
{% endcolumn %}
{% endcolumns %}


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