# Adapter cable helos USB 3.1 Type-C to 3.5 mm, model 288381, silver

**URL:** https://aio.lv/en/product--helos-288381--4077846
**Data updated:** 2025-12-29 15:34 (EET)
**Category:** Audio & Video Cables
**Manufacturer:** helos
**Manufacturer code:** 288381
**EAN:** 4005938883813
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 17.35 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--helos-288381--4077846

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.99 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

helos adapter cable 288381 converts a USB Type-C (USB 3.1) port to a 3.5 mm analogue audio jack. Supplied in silver finish, it enables connection of headphones, earphones or external speakers to devices without a dedicated headphone port. Designed for straightforward plug-and-play use, it is suitable for smartphones, tablets and laptops that support audio over USB-C.

## Long description

helos Premium audio adapter (model 288381) is a 10 cm cable that converts a USB-C (USB 3.1) port into a 3.5 mm stereo mini jack. Finished in silver with gold-plated contacts, the adapter allows connection of headphones, earphones or external speakers to devices that lack a dedicated headphone port. The cable uses thermoplastic elastomer (TPE) for the jacket and supports USB 3.1 audio transmission.
Advantages
The compact 10 cm design reduces cable clutter while providing a direct analog audio output from USB-C devices. Gold-plated connectors improve signal contact and corrosion resistance. The TPE jacket offers flexibility and basic mechanical protection. The adapter is plug-and-play on devices that support audio over USB-C and is certified to the USB 3.1 specification.
Suitable for
Connecting wired headphones or earphones to smartphones, tablets or laptops without a 3.5 mm jack
Connecting portable speakers or car audio systems with a 3.5 mm input
Short, desktop or travel use where a compact adapter cable is required
Key specifications
Model: helos 288381
Connector A: USB-C (24-pin), male — USB 3.1 compliant
Connector B: 3.5 mm stereo mini-jack, female
Cable length: 10 cm
Cable jacket: Thermoplastic Elastomer (TPE)
Plating: Gold-plated contacts
Color: Silver
Compliance: REACH, RoHS 2 (2011/65/EU)
How to use
Insert the USB-C male connector into the device's USB-C port that supports audio output over USB. Plug the 3.5 mm stereo plug of your headphones or speaker cable into the adapter's female mini-jack. Audio should be routed automatically; if not, check the device audio settings to select the USB-C output. Remove by gently pulling the connectors without bending the cable sharply.
Usage recommendations
Use this adapter for short connections and portable setups. Verify that your smartphone, tablet or laptop supports analog audio over USB-C before purchase; if the device does not support audio over USB-C, the adapter will not provide sound.

## FAQ

### How much does the helos USB 3.1 Type-C to 3.5 mm adapter 288381 cost, and is it available for purchase?

The price is 20.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 332 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 16.07.2026 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 helos 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 helos 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/4077846/59842899_large.webp