# Internal USB 3.2 Gen 1 (3.1 Gen 1) interface card adapter, Sonnet Allegro, PCIe host, 20 Gbit/s

**URL:** https://aio.lv/en/product--sonnet-usb3c-4pm-e--4972031
**Data updated:** 2026-03-11 11:49 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** Sonnet
**Manufacturer code:** USB3C-4PM-E
**EAN:** 732311012648
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 488.99 €
**Prices and availability valid until:** 2026-10-24 23:59
**Price without VAT (21%):** 404.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sonnet-usb3c-4pm-e--4972031

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.10.2026 | free |
| Pickup points | 13.10.2026 | 1.99 EUR |
| Courier delivery to door | 13.10.2026 | 4.99 EUR |

## Summary description

Sonnet Allegro internal interface card provides USB 3.2 Gen 1 (3.1 Gen 1) output via a PCIe host interface with a stated bandwidth of 20 Gbit/s. Designed to add high-speed USB connectivity to compatible desktop systems, it supports USB peripherals such as external drives, audio interfaces and backup devices. Suitable for workstation and content-creation use.

## Long description

The Sonnet Allegro internal USB interface card adapter adds USB 3.2 Gen 1 (3.1 Gen 1) connectivity to a desktop system via a PCIe host interface. It provides multiple SuperSpeed+ USB-C ports with an indicated aggregate bandwidth of 20 Gbit/s, intended to enable high-speed connections for external drives, audio interfaces and other USB peripherals. The card is designed for workstation and content-creation environments where faster USB performance and sufficient port power are required than older onboard USB implementations typically provide.
Advantages
The Allegro card supplies multiple 10 Gbps-capable USB-C connections through a PCIe interface, allowing compatible external storage and bus-powered devices to operate at higher sustained transfer rates than legacy USB 3.0 ports. The adapter is compatible with standard desktop PCIe slots and offers per-port power delivery sufficient for many bus-powered USB-C devices. Its design targets improved throughput and responsiveness for workflows that depend on fast external storage, backup devices and professional audio peripherals.
Suitable for
Connecting high-performance external SSDs and NVMe enclosures that use USB-C.
Providing additional USB-C ports for audio interfaces, capture devices and peripherals.
Upgrading older desktops or workstation systems to faster USB connections for content creation and backup.
Systems that require multiple bus-powered USB-C devices with per-port power delivery.
Key specifications
Interface type: PCIe host card providing internal USB 3.2 Gen 1 (3.1 Gen 1) output.
Port type: USB-C SuperSpeed+ connections (10 Gbps per port capability).
Aggregate bandwidth: stated total of 20 Gbit/s for the card.
Power delivery: per-port power sufficient for many bus-powered devices (7.5 W per port stated by manufacturer).
Compatibility: designed for installation in compatible desktop PCIe slots and expansion systems.
How to use
Install the Allegro PCIe card into an available PCIe slot in a compatible desktop or expansion chassis following standard static-free assembly procedures and the system manufacturer’s guidelines. After securing the card and reconnecting power, boot the host system and install any required drivers or software provided by the system or Sonnet to enable the USB controller. Once the host recognizes the card, connect USB-C peripherals to the available ports. For bus-powered devices, confirm that the device operates correctly and that power requirements are met.
Usage recommendations
Use high-quality USB-C cables rated for SuperSpeed+ (10 Gbps) to achieve optimal transfer rates, and ensure the host system’s PCIe slot and platform drivers support the card’s bandwidth. For best results with external SSDs and other high-throughput devices, connect directly to a port on the card rather than through hubs that may limit performance.

## Specifications

### Features

| Feature | Value |
|---|---|
| Bandwidth | 20 Gbit/s |

### Design

| Feature | Value |
|---|---|
| Internal | Yes |

### Ports & interfaces

| Feature | Value |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 4 |
| Host interface | PCIe |
| Output interface | USB 3.2 Gen 1 (3.1 Gen 1) |

## FAQ

### How much does the Sonnet Allegro internal USB 3.2 Gen 1 interface card cost, and is it available for purchase?

The price is 488.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 08.10.2026 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, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Sonnet Allegro internal USB 3.2 Gen 1 interface card be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Sonnet 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 Sonnet 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: internal, host interface, output interface, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/4972031/59210362_large.webp