USB Converter
[USB-402] 8 channel USB RS485/422 Converter (Independent Isolation) HuMANDATA LTD.
[USB-402] 8 channel USB RS485/422 Converter (Independent Isolation)
8 channel USB RS485/422 Converter
Each 8 channels are independent isolation
Overview
USB-402 is an 8 channel USB to RS485/422 converter that isolated between each RS485/422 channel. Also, the 2 port USB connectors have a Hub function. USB Hub ports are not isolated.
USB-402 is that it has the dip switch to enable and disable the built-in 120 ohm terminal resistor. This is designed around the high performance industry proven FTDI chipset.

Features
- Supports RS485/RS422
2-wire or 4-wire of RS485/RS422 selectable by the dip-switch - Each 8 channels are independent isolation
- 2000VDC bus isolation
- Baud rate up to 250 Kbps
- Supports custom baud rate
- Built-in fail-safe bias resisters
- Auto transmit data control
Built-in USB-serial chip has auto transmit controller and the driver is activated when it transmit the data - USB-402 is powered through a USB port (Bus-powered) or an AC adapter (Self-powered)
- 2 USB Hub ports(non-isorated)
- ESD and surge protection
- Housing material: Plastic
- DIN rail and screw mountable (Attachment is required)
- Includes a USB cable (1.8m)
- Includes an AC adapter
- Non-use of 10 Restricted substances of RoHS directive
- MADE IN JAPAN
Specification
Item | Description | Remarks |
---|---|---|
Model | USB-402 | |
Input Power | DC 5V / Less than 500mA Supplied through a USB port (Bus-powered) or AC adapter (Self-powered) |
Recommend the use of an AC adapter for stably supply. |
Number of RS485/422 Port | 8 | |
I/O Interface | RS485/RS422 (2-wire or 4-wire) | ESD protection ![]() |
HOST Interface | USB 2.0 compliant (Support Hi Speed) | USB 1.1 compatible ESD protection ![]() |
HOST Connector | USB B type (Female) | |
Isolation Method | Bus Isolation | |
Isolation Protection | Over 2000VDC | Designed value |
Processor | FT4232H x 2 | FTDI |
USB Driver | Virtual COM port driver | |
Baud Rate | 300 bps to 250 Kbps | Support custom baud rate |
Data Bits | 7 or 8 bit | |
Stop Bits | 1 or 2 bit | |
Parity | Even, Odd or No-parity | |
FIFO RX Buffer Size | 2048 Bytes / ch | |
FIFO TX Buffer Size | 2048 Bytes / ch | |
Number of USB Hub Port | 2 | non-isorated |
USB Hub Port Connector | USB A type (Female) x 2 | |
Supplied Current to Target | Less than 400mA / ch | |
LED | POWER :Power LED RX :Receive data LED x8 TX :Transmit data LED x8 ST :USB Hub status LED x2 |
|
RS485/RS422 Connector | Pluggable the screw terminal 5pin(PHOENIX CONTACT) | 3.5mm pitch |
Support OS | Windows 10/8.1/8/7/Vista/XP | |
Operating Ambient Temperature | -20 to 60℃ (-4 to 140 [°F]) | No condensation permitted |
Operating Ambient Humidity | 30 to 85%RH | No condensation permitted |
Storage Ambient Temperature | -20 to 60℃ (-4 to 140 [°F]) | No condensation permitted |
Storage Ambient Humidity | 30 to 85%RH | No condensation permitted |
Weight | Approx. 400 [g] | Only main body |
Dimensions | 166 x 81.2 x 50 [mm] (6.535" x 3.197" x 1.969") |
Without projections |
* Power saving function (suspend, standby, sleep and others) is not supported
Interface Termianl (RS485/RS422 PIN ASSIGNMENT)

Pin No | Signal | Direction | Notes |
---|---|---|---|
1 |
A (RD+) |
IN | Receive data + |
2 |
B (RD-) |
IN | Receive data - |
3 | GND | - | Signal ground |
4 |
Y (SD+) |
OUT | Transmit data + |
5 |
Z (SD-) |
OUT | Transmit data - |
Package Contents
- USB-402
- USB mini-B cable 1.0 [m]
- AC adapter(DC5V)
- Driver & Application CD
Documentation
Price and Optional Accessories
Description | MODEL | Image | List Price (JPY) | Stock Status |
---|---|---|---|---|
8 channel USB RS485/422 Converter | USB-402 | ![]() |
||
Attachment for horizontal direction |
ACC-028 | ![]() |
||
Attachment for DIN rail type B |
ACC-031 | ![]() |
||
Neodymium magnet set |
ACC-036 | ![]() |
||
Detachable 5P Terminal Connector 1840395 (Phoenix) (Additional purchase) |
TB35-USB-5 |
Ordering
[USB-033] 4 Channel RS232C/USB Converter (Independent Isolation Type) HuMANDATA LTD.
[USB-033] 4 Channel RS232C/USB Converter (Independent Isolation Type)
USB to RS232C Converter ISOLATED
Overview
USB-033 is a 4 channel USB to RS-232C converter that isolated with 2500VDC between each RS-232C serial port and a USB port. You can use 4 channels of RS232C serial port from a USB port. Those 4 channels are isolated independently from a USB side.
It supports High Speed baud rates of up to 1Mbps. This is designed around the high performance industry proven FTDI chipset. USB-033 is Non-use of 10 Restricted substances of RoHS directive.

Features
- Supports RS232C
- 2500VDC bus isolation
- Baud rate up to 1Mbps
- Supports custom baud rate
- Auto transmit data control
Built-in USB-serial chip has auto transmit controller and the driver is activated when it transmit the data - No external power supply is required
USB-033 is powered through a USB port (Bus-powered) - ESD and surge protection
- Housing material: Plastic
- DIN rail and screw mountable (Attachment is required)
- Includes a USB cable (1.8m)
- Non-use of 10 Restricted substances of RoHS directive
- MADE IN JAPAN
Specification
Item | Description | Remarks |
---|---|---|
Model | USB-033 | |
Input Power | DC 5V / Less than 450mA Supplied through a USB port |
No external power supply required |
HOST Interface | USB 2.0 compliant (Support Hi Speed) | USB 1.1 compatible ESD protection ![]() |
HOST Connector | Standard Type mini-B Female | |
Processor | FT4232H | FTDI |
Isolation Method | Bus Isolation | |
Isolation Protection | 2500VDC | Designed value |
I/O Interface | RS232C | ESD protection ![]() |
Number of RS232C Port | 4 | |
RS232C Connector | D-SUB 9pin Male (#4-40 UNC) | |
Communication Method | Asynchronous Serial Communication |
|
Baud Rate | 300 bps to 1 Mbps | Support custom baud rate |
Data Bits | 7 or 8 bit | |
Stop Bits | 1 or 2 bit | |
Parity | Even, Odd or No-parity | |
FIFO RX Buffer Size | 2048 bytes/ch | |
FIFO TX Buffer Size | 2048 bytes/ch | |
USB Driver | Virtual COM port driver | |
Support OS | Windows 10/8.1/8/7/Vista/XP | |
Operating Ambient Temperature | -20 to 60℃ (-4 to 140 °F) | No condensation permitted |
Operating Ambient Humidity | 30 to 85%RH | No condensation permitted |
Storage Ambient Temperature | -20 to 55℃ (-4 to 131 [°F]) | No condensation permitted |
Storage Ambient Humidity | 30 to 85%RH | No condensation permitted |
Weight | Approx. 300 [g] | Only main body |
Dimensions | 165 x 80.5 x 39 [mm] (6.496" x 3.169" x 1.535") |
Without projections |
* Power saving function (suspend, standby, sleep and others) is not supported
RS232C Connector pinouts

Pin No | Name | Direction | Notes |
---|---|---|---|
1 | NC | - | Unused |
2 | RXD | IN | Receive data |
3 | TXD | OUT | Transmit data |
4 | NC | - | Unused |
5 | GND | - | Signal ground |
6 | NC | - | Unused |
7 | RTS | OUT | Request to send |
8 | CTS | IN | Clear to send |
9 | (5V) | - | Optional 5V |
CASE | FG | - | Connected to GND |
Package Contents
- USB-033
- USB mini-B cable 1.0 [m]
- Driver & Application CD
Documentation
Price and Optional Accessories
Description | MODEL | Image | List Price (JPY) | Stock Status |
---|---|---|---|---|
4 Channel RS232C/USB Converter (Independent Isolation Type) |
USB-033 | ![]() |
||
Attachment for vertical direction |
ACC-027 | ![]() |
||
Attachment for horizontal direction |
ACC-028 | ![]() |
||
Attachment for DIN rail type B |
ACC-031 | ![]() |
||
Neodymium magnet set |
ACC-036 | ![]() |
||
D-sub 9pin - TB Adapter with FG Terminal |
ACC-045 | ![]() |
Ordering
[USB-033SI] 4 Channel RS232C/USB Converter (Common Isolation Type) HuMANDATA LTD.
[USB-033SI] 4 Channel RS232C/USB Converter (Common Isolation Type)
USB to RS232C Converter ISOLATED
Non-use of 6 Restricted substances of RoHS directive.
Overview
USB-033SI is a 4 channel USB to RS-232C converter that isolated with 2500VDC between each RS-232C serial port and a USB port. You can use 4 channels of RS232C serial port from a USB port. Those 4 channels are isolated commonly from a USB port.
It supports High Speed baud rates of up to 1Mbps. This is designed around the high performance industry proven FTDI chipset. USB-033SI is Non-use of 6 Restricted substances of RoHS directive.

Features
- Supports RS232C
- 2500VDC bus isolation
- Baud rate up to 1Mbps
- Supports custom baud rate
- Auto transmit data control
Built-in USB-serial chip has auto transmit controller and the driver is activated when it transmit the data - No external power supply is required
USB-033SI is powered through a USB port (Bus-powered) - ESD and surge protection
- Housing material: Plastic
- DIN rail and screw mountable (Attachment is required)
- Includes a USB cable (1.8m)
- Non-use of 10 Restricted substances of RoHS directive
- MADE IN JAPAN
Specification
Item | Description | Remarks |
---|---|---|
Model | USB-033SI | |
Input Power | DC 5V / Less than 450mA Supplied through a USB port |
No external power supply required |
HOST Interface | USB 2.0 compliant (Support Hi Speed) | USB 1.1 compatible ESD protection ![]() |
HOST Connector | Standard Type mini-B Female | |
Processor | FT4232H | FTDI |
Isolation Method | Bus Isolation | |
Isolation Protection | 2500VDC | Designed value |
I/O Interface | RS232C | ESD protection ![]() |
Number of RS232C Port | 4 | |
RS232C Connector | D-SUB 9pin Male (#4-40 UNC) | |
Communication Method | Asynchronous Serial Communication |
|
Baud Rate | 300 bps to 1 Mbps | Support custom baud rate |
Data Bits | 7 or 8 bit | |
Stop Bits | 1 or 2 bit | |
Parity | Even, Odd or No-parity | |
FIFO RX Buffer Size | 2048 bytes/ch | |
FIFO TX Buffer Size | 2048 bytes/ch | |
USB Driver | Virtual COM port driver | |
Support OS | Windows 10/8.1/8/7/Vista/XP | |
Operating Ambient Temperature | -20 to 60℃ (-4 to 140 °F) | No condensation permitted |
Operating Ambient Humidity | 30 to 85%RH | No condensation permitted |
Storage Ambient Temperature | -20 to 55℃ (-4 to 140 °F) | No condensation permitted |
Storage Ambient Humidity | 30 to 85%RH | No condensation permitted |
Weight | Approx. 300 [g] | Only main body |
Dimensions | 165 x 80.5 x 39 [mm] (6.496" x 3.169" x 1.535") |
Without projections |
* Power saving function (suspend, standby, sleep and others) is not supported
RS232C Connector pinouts

Pin No | Name | Direction | Notes |
---|---|---|---|
1 | NC | - | Unused |
2 | RXD | IN | Receive data |
3 | TXD | OUT | Transmit data |
4 | NC | - | Unused |
5 | GND | - | Signal ground |
6 | NC | - | Unused |
7 | RTS | OUT | Request to send |
8 | CTS | IN | Clear to send |
9 | (5V) | - | Optional 5V |
CASE | FG | - | Connected to GND |
Package Contents
- USB-033SI
- USB mini-B cable 1.0 [m]
- Driver & Application CD
Documentation
Price and Optional Accessories
Description | MODEL | Image | List Price (JPY) | Stock Status |
---|---|---|---|---|
4 Channel RS232C/USB Converter (Common Isolation Type) |
USB-033SI | ![]() |
||
Attachment for vertical direction |
ACC-027 | ![]() |
||
Attachment for horizontal direction |
ACC-028 | ![]() |
||
Attachment for DIN rail type B |
ACC-031 | ![]() |
||
Neodymium magnet set |
ACC-036 | ![]() |
||
D-sub 9pin - TB Adapter with FG Terminal |
ACC-045 | ![]() |
Ordering
[USB-401] 8 channel USB RS232 Converter HuMANDATA LTD.
[USB-401] 8 channel USB RS232 Converter MAX 1Mbps
USB to RS232C Converter ISOLATED
Non-use of 6 Restricted substances of RoHS directive.
Overview
USB-401 is an 8 channel USB to RS-232C converter that isolated between each RS-232C channel and 2 USB ports. Also, the 2 port USB connectors have a HUB function.

Features
- Supports RS232C
- 2500VDC bus isolation
- Baud rate up to 1Mbps
- Supports custom baud rate
- Auto transmit data control
Built-in USB-serial chip has auto transmit controller and the driver is activated when it transmit the data - USB-401 is powered through a USB port (Bus-powered) or an AC adapter (Self-powered)
- ESD and surge protection
- Housing material: Plastic
- DIN rail and screw mountable (Attachment is required)
- Includes a USB cable (1.8m)
- Includes an AC adapter
- Non-use of 10 Restricted substances of RoHS directive
- MADE IN JAPAN
Specification
Item | Description | Remarks |
---|---|---|
Model | USB-401 | |
Input Power | DC 5V / Less than 500mA Supplied through a USB port (Bus-powered) or AC adapter (Self-powered) |
Recommend the use of an AC adapter for stably supply. |
HOST Interface | USB 2.0 compliant (Support Hi Speed) | USB 1.1 compatible ESD protection ![]() |
HOST Connector | USB B type (Female) | |
Processor | FT4232H x 2 | FTDI |
Isolation Method | Bus Isolation | |
Isolation Protection | Over 2500VDC | Designed value |
I/O Interface | RS232C | ESD protection ![]() |
Number of RS232C Port | 8 | |
RS232C Connector | D-SUB 9pin Male (#4-40 UNC) | M2.6 screws are also included in the package |
Communication Method | Asynchronous Serial Communication |
|
Baud Rate | 300 bps to 1 Mbps | Support custom baud rate |
Data Bits | 7 or 8 bit | |
Stop Bits | 1 or 2 bit | |
Parity | Even, Odd or No-parity | |
FIFO RX Buffer Size | 2K bytes/ch | |
FIFO TX Buffer Size | 2K bytes/ch | |
Number of USB Hub Port | 2 | |
USB Hub Port Connector | USB A type (Female) x 2 | |
USB Driver | Virtual COM port driver | |
Support OS | Windows 10/8.1/8/7/Vista/XP | |
Operating Ambient Temperature | -20 to 60℃ (-4 to 140 [°F]) | No condensation permitted |
Operating Ambient Humidity | 30 to 85%RH | No condensation permitted |
Storage Ambient Temperature | -20 to 55℃ (-4 to 131 [°F]) | No condensation permitted |
Storage Ambient Humidity | 30 to 85%RH | No condensation permitted |
Weight | Approx. 400 [g] | Only main body |
Dimensions | 166 x 81.2 x 50 [mm] (6.535" x 3.197" x 1.969") |
Without projections |
* Power saving function (suspend, standby, sleep and others) is not supported
RS232C Connector pinouts

Pin No | Name | Direction | Notes |
---|---|---|---|
1 | DCD | IN | Data carrier detect |
2 | RXD | IN | Receive data |
3 | TXD | OUT | Transmit data |
4 | DTR | OUT | Data terminal ready |
5 | GND | - | Signal ground |
6 | DSR | IN | Data set ready |
7 | RTS | OUT | Request to send |
8 | CTS | IN | Clear to send |
9 | RI | IN | Ring indicator |
CASE | FG | - | Connected to GND |
Package Contents
- USB-401
- USB cable 1.8m
- AC adapter
- Driver & Application CD
- Screw Lock M2.6 D-sub Connectors
(#4-40 UNC Connectors are mounted by default)
Documentation
Price and Optional Accessories
Description | MODEL | Image | List Price (JPY) | Stock Status |
---|---|---|---|---|
8 channel USB RS232 Converter (Common Isolation Type) |
USB-401 | ![]() |
||
Attachment for horizontal direction |
ACC-028 | ![]() |
||
Attachment for DIN rail type B |
ACC-031 | ![]() |
||
Neodymium magnet set |
ACC-036 | ![]() |
||
D-sub 9pin - TB Adapter with FG Terminal |
ACC-045 | ![]() |
Ordering
USB Converter (RS485, RS422, RS232)
USB Converter
RS485/RS422
No | I/F | Product | Features |
---|---|---|---|
RS485 RS422 |
![]() USB-003 |
USB RS485/RS422 Converter (MAX 250Kbps) | |
RS485 | ![]() USB-503 |
USB to RS485 Converter Compact | |
RS485 | ![]() USB-503-RJ45 |
USB to RS485 Converter (RJ45 type) | |
RS485 RS422 |
![]() USB-010 |
USB RS485/RS422 Converter (MAX 12Mbps) | |
RS485 RS422 |
![]() USB-304 |
2 channel USB RS485/422 Converter (Independent Isolation) MAX 12Mbps
|
|
RS485 RS422 |
![]() USB-039 |
4 Channel USB to RS485/422 Converter
|
|
RS485 RS422 |
![]() USB-402 |
8 channel USB RS485/422 Converter (Independent Isolation)
|
|
RS485 | ![]() USB-507 |
USB to RS485 Converter Compact (MAX 6Mbps) | |
RS485 RS422 |
![]() USB-508 |
USB to RS485/422 Converter Compact |
RS232
No | I/F | Product | Features |
---|---|---|---|
RS232 | ![]() USB-013 |
USB RS232 Converter (MAX 1Mbps) | |
RS232 | ![]() USB-501 |
USB to RS-232C Converter Compact | |
RS232 | ![]() USB-511 |
USB to RS-232C Converter Compact (Configurable serial settings) |
|
RS232 | ![]() USB-033 |
4 Channel RS232C/USB Converter (Independent Isolation Type) |
|
RS232 | ![]() USB-033SI |
4 Channel RS232C/USB Converter (Common Isolation Type) |
|
RS232 | ![]() USB-302 |
2 Channel USB to RS232 Converter | |
RS232 | ![]() USB-401 |
8 channel USB RS232 Converter (Common Isolation Type) |
UNDER DEVELOPMENT
No | I/F | Product | Features |
---|---|---|---|
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