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header-product InLine 33307C USB 2.0 to RS-485 Serial Converter Repeater Isolator with FTDI Chipset
29.49 €

InLine 33307C USB 2.0 to RS-485 Serial Converter Repeater Isolator with FTDI Chipset

InLine 33307C USB to RS-485 Serial Converter Photo 1
InLine 33307C USB to RS-485 Serial Converter Photo 2
InLine 33307C USB to RS-485 Serial Converter Photo 3
InLine 33307C USB to RS-485 Serial Converter Photo 4
InLine 33307C USB to RS-485 Serial Converter Photo 1
InLine 33307C USB to RS-485 Serial Converter Photo 2
InLine 33307C USB to RS-485 Serial Converter Photo 3
InLine 33307C USB to RS-485 Serial Converter Photo 4

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InLine 33307C USB 2.0 to RS-485 Serial Converter Repeater Isolator with FTDI Chipset

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InLine 33307C USB 2.0 to RS-485 Serial Converter Repeater Isolator with FTDI Chipset

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Short description

InLine 33307C serial converter, repeater, and isolator connects USB 2.0 devices to an RS-485 serial interface. Equipped with a reliable FTDI chipset, this black adapter ensures stable data transmission and galvanic isolation. It is compatible with a wide range of Windows and macOS operating systems, making it ideal for industrial, commercial, and technical applications requiring secure serial communication.
Available for order: 50 pcs.
Warranty: 2 Years
SKU: 12649368
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
21.10.2026 {{selectedOffer.officeDeliveryString}}
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26.10.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.00 kg)
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Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
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From 1.99 €
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Product information

Description

The InLine 33307C USB 2.0 to RS-485 Serial Converter Repeater Isolator with FTDI Chipset connects a computer with a USB Type-A port to RS-485 serial devices or bus systems, enabling stable communication via a virtual COM port. Equipped with a reliable FTDI FT232RNL chipset, this black adapter ensures secure data transmission and galvanic isolation, making it suitable for demanding technical environments.

Advantages

This serial converter features automatic hardware-based direction switching for half-duplex operation, meaning that the transition between transmission and reception happens seamlessly without requiring manual software configuration or RTS/CTS signals. Integrated protection mechanisms such as protective diodes, an ESD-protected USB interface, a 200 mA PTC fuse, and a resettable fuse on the RS485 side enhance operational reliability and safety in complex setups. Furthermore, the built-in 120 ohm terminating resistor minimizes signal reflections over long cable runs, while the USB-powered 5 volt output provides convenient auxiliary power for external devices with low current consumption.

Suitable for

  • Modbus RTU networks
  • Industrial automation systems
  • Building automation and control
  • Measurement and data collection technology
  • Configuration and diagnostic tasks

When it may not be suitable

This device may not be suitable if your setup requires a full-duplex RS-485 connection, as this adapter is strictly designed for half-duplex operation with automatic direction switching. It is also not intended for high-speed data links exceeding 512 kbit/s or for direct connection to host systems lacking a standard USB Type-A port without appropriate adapters.

Key specifications

  • Host interface: USB 2.0 Type-A
  • Output interface: RS-485 via terminal block
  • Chipset: FTDI FT232RNL
  • Baud rate: 300 to 512,000 bps
  • Transmission mode: Half-duplex with automatic direction switching
  • Maximum cable length: Up to 1.2 km for RS-485, up to 5 m for USB
  • Power output: USB-powered 5 V output up to 400 mA
  • Dimensions: Width 22 mm, Depth 78 mm, Height 11 mm
  • Operating temperature: -40 °C to +85 °C

How to use

To use the adapter, connect the USB Type-A connector to an available USB port on your host computer. Connect the RS-485 wiring to the appropriate terminals using the terminal block configuration, taking note of the ground, data positive, data negative, and power supply assignments. Install the required drivers for the operating system if necessary, and configure your software to communicate through the newly assigned virtual COM port. The built-in status indicators for power, transmit, and receive will help monitor operational status during data exchange.

What to consider before purchase

  • Verify that your operating system is compatible with the driver requirements, such as Windows versions, macOS, Linux, Android, or Windows CE.
  • Check the power requirements of your peripheral devices to ensure they do not exceed the 400 mA limit provided by the 5V USB power output.
  • Assess the network layout to determine if the integrated 120 ohm resistor is sufficient or if additional termination is needed for larger bus segments.

Usage recommendations

Always ensure correct polarity and secure connections at the terminal block before powering on the system, and verify that cable lengths and device counts per bus segment adhere to standard RS-485 operational limits to maintain signal integrity.
All features
Dimensions (WxDxH): Dimensions of the product (Width x Depth x Height).
22 x 78 x 11
Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.014 kg
Operating relative humidity (H-H):
5 - 95
Chipset: Set of electronic components in an integrated circuit that manages the data flow between the processor, memory and peripherals. It is usually found in the motherboard of a computer. Chipsets are usually designed to work with a specific family of microprocessors. Because it controls communications between the processor and external devices, the chipset plays a crucial role in determining system performance.
FTDI FT232RNL
Package weight: Weight of the packaged product.
33 g
Mac compatibility: Product can be used with Apple Mac software and/or hardware.
Yes
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
-15 - 70
Height: The measurement of the product from head to foot or from base to top.
11 mm
Output voltage:
5
Width: The measurement or extent of something from side to side.
22 mm
Depth: The distance from the front to the back of something.
78 mm
Product colour: The colour e.g. red, blue, green, black, white.
Black
Host interface: Interface that enables a host controller to communicate with a driver.
USB 2.0
Country of origin: Country where the device is made. Aka Country of manufacture (COM).
China
Package depth: The distance from the front to the back of the packaging.
165 mm
Package height: The distance from the top to the bottom of the packaging.
22 mm
Package width: The distance from one side of the packaging to the other.
100 mm
Package type: The type of product package e.g. box.
Polybag
Connector 1: This is the first connector in the device.
USB Type-A
Connector 2: This is the second connector in the device.
Terminal block
Output interface: The ports (sockets) where the device is connected via connectors and cables to external devices.
RS-485
Baud rate:
512 Kbit/s
RS-485 signals:
GND
Windows operating systems supported: Windows vesions wich can be used with the device.
Windows 11, Windows 10, Windows XP, Windows CE, Windows 8.1, Windows 8, Windows 7
Mac operating systems supported: Mac operating systems e.g. OS X can be used with the device.
MacOS
Package volume:
400 cm³
Connector gender: To distinguish parts on a cable interface, connectors are grouped under genders. Sockets or jacks are considered to be female whilst plugs are referred to as male.
Male/Female

Description

Machine translation. Load original

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Product comparison

In this comparison, InLine 33307C USB to Serial RS485 Converter with FTDI Chipset is evaluated alongside several alternative serial adapters and cables, including InLine 33307D, InLine 33307E, InLine 33307B, Exsys EX-13001, and Exsys EX-1346. All products in this comparison serve the purpose of bridging modern USB ports with legacy or industrial serial hardware. The main differences lie in the supported serial interface standards (RS485, RS422, RS232) and the inclusion of specialized physical protections such as galvanic isolation or lightning protection.

⚙️ The specifications table below compares key product characteristics: interface standard, presence of an isolator or lightning protection, chipset, and connection form factor.

ParameterInLine 33307CInLine 33307DInLine 33307EInLine 33307BExsys EX-13001Exsys EX-1346Practical significance
Interface typeRS485RS485RS485RS232RS232RS422 / RS485Determines compatibility with the target serial peripheral device.
ChipsetFTDINot specifiedNot specifiedNot specifiedFTDIFTDIFTDI chipset ensures robust driver stability and broad operating system support.
Extra protectionStandardBuilt-in isolatorLightning protectionBuilt-in isolatorStandardStandardIsolators and lightning protection are critical for stable operation in harsh environments.
Form factorConverterConverter with terminalConverterAdapterCable (1.8 m)CableAffects physical installation convenience and the need for extra cabling.

◎ The suitability table below evaluates which product matches specific use cases and buyer requirements.

Use caseRecommended productWhy
Standard RS485 communication in stable environmentsInLine 33307CA reliable base model featuring an FTDI chipset, ideal for general automation and networking tasks.
Environments prone to electrical noise or ground loopsInLine 33307D or InLine 33307BEquipped with a built-in isolator to protect equipment from electrical interference and surges.
Industrial setups with lightning exposure risksInLine 33307EFeatures integrated lightning protection to safely connect equipment in exposed areas.
Connecting standard RS232 serial peripheralsExsys EX-13001 or InLine 33307BProvides direct compatibility with legacy devices relying on RS232 signaling.
Integrated cable solution for RS422 or RS485Exsys EX-1346Supplied as a complete cable supporting both RS422 and RS485 communication.

InLine 33307C provides a dependable and straightforward solution for connecting RS485 serial equipment to a USB port using a reliable FTDI chipset. It is best suited for standard industrial automation and networking applications where specialized physical protection like isolation or lightning protection is unnecessary. If your deployment environment involves electrical noise or requires support for different interface standards such as RS232 or RS422, one of the alternative models from InLine or Exsys will be more appropriate.

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Customer reviews

Customer questions

FAQ

How much does the InLine 33307C USB to RS-485 Serial Converter cost, and is it available for purchase?

The price is 29.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 21.10.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All InLine products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized InLine service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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