{{ totalProductsCount }}

In cart {{totalProductsCount}} item(s)

Total:
{{sum | formatAmount}}

Your cart is empty

header-product InLine 33307E USB 2.0 to RS-232 serial converter repeater isolator with lightning protection in black
35.49 €

InLine 33307E USB 2.0 to RS-232 serial converter repeater isolator with lightning protection in black

InLine 33307E USB to RS-232 Serial Converter Photo 1
InLine 33307E USB to RS-232 Serial Converter Photo 2
InLine 33307E USB to RS-232 Serial Converter Photo 3
InLine 33307E USB to RS-232 Serial Converter Photo 4
InLine 33307E USB to RS-232 Serial Converter Photo 1
InLine 33307E USB to RS-232 Serial Converter Photo 2
InLine 33307E USB to RS-232 Serial Converter Photo 3
InLine 33307E USB to RS-232 Serial Converter Photo 4

New arrival!

Keep track of price changes You keep track of price changes
Watch the price drop

Leave your address - as soon as the price of the product goes down, you'll know about it right away

You keep track of price changes

InLine 33307E USB 2.0 to RS-232 serial converter repeater isolator with lightning protection in black

{{email}}
You keep track of price changes

InLine 33307E USB 2.0 to RS-232 serial converter repeater isolator with lightning protection in black

{{email}}
{{selectedOffer && selectedOffer.price | formatAmount}}

Short description

The InLine 33307E is a versatile serial converter, repeater, and isolator designed to bridge USB 2.0 and RS-232 interfaces with integrated lightning protection. It ensures reliable data transmission and equipment safety in various professional and industrial setups. Compatible with a wide range of Windows and macOS operating systems, this device offers seamless connectivity and easy integration for legacy serial equipment.
Available for order: 50 pcs.
Warranty: 2 Years
SKU: 12649370
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

{{selectedOffer.parcelStationDeliveryString}}

Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
14.10.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
19.10.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.00 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
19.10.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
payment
Payment Methods:
Bank transfer
Together cheaper
{{product.price | formatAmount}}
{{product.title}}
{{productBundle.reference.specialPrice | formatAmount}}
{{productBundle.title}}
{{productBundlePreviousPrice | formatAmount}}
{{productBundleSpecialPrice | formatAmount}}

You saving {{productBundleYouSave | formatAmount}}

Product information

Description

The InLine 33307E USB 2.0 to RS-232 serial converter repeater isolator with lightning protection in black is designed to bridge modern USB interfaces with legacy serial hardware. It ensures stable and secure data communication in demanding professional environments. Featuring robust electrical protection and wide operating system compatibility, this device prevents data loss and safeguards connected equipment against electrical surges.

Advantages

This serial converter provides exceptional operational safety through integrated lightning, overvoltage, and electrostatic discharge protection mechanisms. The reliable chipset guarantees stable virtual COM port communication across extended distances while supporting high data transfer rates. Additionally, automatic hardware-based direction switching simplifies installation by eliminating the need for manual software configuration during half-duplex operation, making it an efficient solution for complex networks.

Suitable for

  • Connecting modern computers to legacy serial devices
  • Industrial automation and control systems
  • Building automation and energy monitoring setups
  • Measurement and control technology applications

When it may not be suitable

This device is not designed for direct consumer applications that do not utilize serial communication standards. It may also be unnecessary for short-range, isolated office environments lacking potential electrical interference risks.

Key specifications

  • Host interface: USB 2.0
  • Output interface: RS-232
  • Connector types: USB Type-A and terminal block
  • Maximum baud rate: 512 Kbit/s
  • Dimensions: 22 mm width, 75 mm depth, 11 mm height
  • Color: Black

How to use

Connect the device to an available USB port on your computer using a compatible USB cable. Attach the serial wiring to the terminal block interface following the correct pin assignment. Install the appropriate drivers if required by your operating system, and the virtual COM port will be ready for data transmission.

What to consider before purchase

  • Verify that your legacy equipment utilizes an RS-232 serial interface
  • Check operating system compatibility with your current hardware setup
  • Assess whether integrated lightning and surge protection is necessary for your environment

Usage recommendations

Ensure that all wiring is securely connected to the terminal blocks and that proper grounding is maintained to optimize the effectiveness of the integrated lightning and surge protection features.
All features
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
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
Width: The measurement or extent of something from side to side.
22 mm
Depth: The distance from the front to the back of something.
75 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 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-232
RS-232 signals:
Rx, Tx, GND
Isolation:
2.5 kV
Electrostatic Discharge (ESD) protection:
15 kV
Baud rate:
512 Kbit/s
RS-485 signals:
GND
Windows operating systems supported: Windows vesions wich can be used with the device.
Windows 8, Windows XP, Windows 10, Windows 11, Windows 8.1, Windows 7
Mac operating systems supported: Mac operating systems e.g. OS X can be used with the device.
MacOS
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

Similar products

{{product.title}}
Show details Hide details

{{highlightedFeature.featureTitle}}:

{{getProductFeatureValueById(product, highlightedFeature.featureId)}}

{{product.price | formatAmount}}

Product comparison

The InLine 33307E USB to Serial RS485 Converter with Lightning Protection is compared against similar alternatives from InLine and StarTech. All are designed for industrial automation, networking, and legacy equipment integration, but they differ in interface standards, protective features, and physical build.

⚙️ The table below compares the interface type, primary purpose, protective and design features, and the practical significance of these differences.

ParameterInLine 33307EInLine 33307CInLine 33307DInLine 33307AStarTech IC232485SPractical significance
Interface typeUSB to RS485USB to RS485USB to RS485USB to RS232RS232 to RS422/485Determines compatibility with the target serial equipment and host port type.
Protection and featuresBuilt-in lightning protectionFTDI chipset for stabilityBuilt-in isolatorTerminal connectionSteel housing, 15kV ESD protectionThe 33307 series focuses on line-level electrical protection, whereas StarTech offers rugged physical housing and heavy-duty ESD defense.
Primary purposeCommunication in lightning-prone environmentsStable data transmission and OS compatibilitySecure transmission with galvanic isolationRS232 legacy device integrationProtocol conversion and demanding environmentsAllows matching the adapter to specific electrical and physical operating conditions.

◎ The table below evaluates the suitability of each product for different user needs and use cases.

Use caseRecommended productWhy
Industrial environments with exposure to lightning surgesInLine 33307EEquipped with built-in lightning protection for safer communication lines.
Applications requiring proven chipset compatibilityInLine 33307CUtilizes a reliable FTDI chipset for stable data flow.
Environments with high interference requiring isolationInLine 33307DFeatures a built-in isolator to prevent ground loops and electrical disruptions.
Connecting RS232 equipment via terminal blocksInLine 33307ADesigned specifically for USB to RS232 conversion with a terminal connection.
Demanding conditions needing heavy-duty electrostatic protectionStarTech IC232485SProvides a robust steel housing and 15kV ESD protection for harsh environments.

The InLine 33307E USB to Serial RS485 Converter with Lightning Protection differs from alternatives by incorporating specialized lightning protection for RS485 serial communication. It is most suitable for industrial and commercial automation setups where signal lines face potential surge risks, making it a specialized choice compared to models featuring standard isolation, FTDI chipsets, or RS232 support.

Might be useful
{{product.manufacturerName}}
{{product.categoryName}}
{{product.title}}
{{product.specialPrice}}
{{product.price}}

Customer reviews

Customer questions

FAQ

How much does the InLine 33307E USB to RS-232 Serial Converter cost, and is it available for purchase?

The price is 35.49 € (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 14.10.2026 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.
warranty
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.
shipping
Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
payment
Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.