# PCIe USB 3.0 Card Adapter StarTech PEXUSB3S25

**URL:** https://aio.lv/en/product--startech-pexusb3s25--433574
**Data updated:** 2025-12-28 21:19 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** StarTech
**Manufacturer code:** PEXUSB3S25
**EAN:** 0065030854603
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 39.99 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 33.05 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--startech-pexusb3s25--433574

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

The StarTech.com 2 Port PCI Express USB 3.0 Card Adapter offers high-speed data transfer rates of up to 5 Gbit/s. It features a PCIe host interface and supports USB 3.2 Gen 1 output. The card is compatible with various Windows operating systems, including Windows 10 and Windows Server editions. With a compact design, it fits both full-height and low-profile cases, making it versatile for different setups. The adapter is powered via LP4 and includes a Renesas/NEC chipset for reliable performance.

## Long description

The StarTech PEXUSB3S25 PCIe USB 3.0 Card Adapter adds two SuperSpeed USB 3.0 ports to a PCI Express-enabled desktop or small form-factor computer. The card supports USB 3.0 data rates up to 5 Gbps, is backward compatible with USB 2.0/1.1 devices, and includes an optional LP4 power connector to provide up to 900 mA per port for bus-powered USB 3.0 devices (500 mA for USB 2.0). The adapter ships with both a full‑height and a low‑profile bracket for flexible installation.
Advantages
The PCIe USB 3.0 controller supports UASP (USB Attached SCSI Protocol) to improve throughput and reduce processor load compared with traditional USB Bulk‑Only Transport; in StarTech testing UASP delivered up to 70% faster read and 40% faster write performance and reduced CPU usage by up to 80% under peak conditions. The dual‑profile design fits standard and small form‑factor cases, and the optional LP4 power input enables reliable operation of higher-power USB devices.
Suitable for
Adding two USB 3.0 ports to desktop or small form‑factor PCs
Connecting external SSDs, HDDs, and high‑speed USB storage enclosures
Providing extra ports for USB peripherals that require higher power
Upgrading systems to USB 3.0 / USB 3.2 Gen 1 speeds
Key specifications
Model: StarTech PEXUSB3S25 (MPN: PEXUSB3S25)
Interface: PCIe host interface
Output: USB 3.2 Gen 1 (USB 3.0) — up to 5 Gbps
Ports: 2 external USB 3.0 Type‑A ports
Power: Optional LP4 (Molex) connector — up to 900 mA per USB 3.0 port
Compatibility: Backward compatible with USB 2.0 / 1.1
Brackets: Includes full‑height and low‑profile brackets
Chipset: Renesas/NEC (as used in product)
Weight: 0.051 kg
How to use
Power down and unplug the computer, open the case, and install the PCIe card into an available PCI Express slot. Secure the card with the bracket screw and attach either the full‑height or low‑profile bracket as required by your chassis. If connecting bus‑powered devices that need additional current, attach the system power supply using the optional LP4 (Molex) connector. Close the case, power on the system, and install any necessary drivers for your operating system. For best performance with UASP, use a UASP‑capable operating system and UASP‑enabled storage enclosure.
Usage recommendations
For optimal transfer speeds and reduced CPU usage, use the card with UASP‑capable devices and an operating system that supports UASP (for example Windows 8/8.1/10/Server 2012 and later or Linux kernel 2.6.37+). When installing in small form‑factor systems, ensure you use the included low‑profile bracket and confirm available PCIe lane type and space before installation.

## Specifications

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 5 - 85 |
| Storage temperature (T-T) | -20 - 60 |
| Operating temperature (T-T) | 0 - 50 |

### Technical details

| Feature | Value |
|---|---|
| Sustainability certificates | RoHS |

### Ports & interfaces

| Feature | Value |
|---|---|
| Host interface | PCIe |
| Output interface | USB 3.2 Gen 1 (3.1 Gen 1) |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| Expansion card standard | PCIe 2.0 |
| Expansion card form factor | Full-height / Low-profile |

### Other features

| Feature | Value |
|---|---|
| Manual | Yes |
| Drivers included | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.051 kg |
| Package weight | 154 g |
| Height | 120 mm |
| Width | 18 mm |
| Depth | 82 mm |

### System requirements

| Feature | Value |
|---|---|
| Windows operating systems supported | Windows Vista Business x64, Windows Vista Business, Windows Vista, Windows 8.1 x64, Windows 8.1 Pro x64, Windows 8.1 Pro, Windows 8.1 Enterprise x64, Windows 8.1 Enterprise, Windows 8.1, Windows 8 x64, Windows 8 Pro x64, Windows 8 Pro, Windows 8 Enterprise x64, Windows Vista Enterprise, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows Vista x64, Windows 8, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 10 x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8 Enterprise |
| Linux operating systems supported | Y |
| Server operating systems supported | Windows Server 2016, Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2019 |

### Design

| Feature | Value |
|---|---|
| Internal | Yes |
| Maximum cable length | 3 m |

### Performance

| Feature | Value |
|---|---|
| Certification | CE, FCC |
| Chipset | Renesas / NEC - µPD720202 |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84733020 |

### Features

| Feature | Value |
|---|---|
| Data transfer rate (max) | 5 Gbit/s |
| UASP support | Yes |

### Packaging data

| Feature | Value |
|---|---|
| Cables included | SATA |
| Package depth | 171 mm |
| Package height | 30 mm |
| Package width | 143 mm |

## FAQ

### How much does the USB 3.0 Card Adapter StarTech PEXUSB3S25 cost, and is it available for purchase?

The price is 39.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 74 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 22.06.2026 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. 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 StarTech 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 StarTech 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: host interface, weight, internal, 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/433574/56502917_large.webp