# 2-Port PCI Express Serial Interface Card StarTech.com 21050-PC-SERIAL-LP Dual Port PCIe to RS232

**URL:** https://aio.lv/en/product--startech-21050-pc-serial-lp--9186981
**Data updated:** 2025-12-30 08:36 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** StarTech
**Manufacturer code:** 21050-PC-SERIAL-LP
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 70.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 58.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--startech-21050-pc-serial-lp--9186981

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The StarTech.com 2-Port PCI Express Serial Interface Card features dual RS232 ports, supports baud rates up to 921.6 Kbit/s, and is compatible with Windows and Linux operating systems. It includes low/full profile brackets and COM retention for versatile installation.

## Long description

The StarTech.com 2-Port PCI Express Serial Interface Card (model 21050-PC-SERIAL-LP) adds two RS-232 (DB9) serial ports to a Small Form Factor or full-size system via a PCIe 2.0 x1 slot. Each port supports bidirectional data rates up to 921.6 Kbps and includes a 256-byte transmit/receive FIFO and 16C1050-compatible UART for reliable serial communication. Low-profile and full-height brackets are included for flexible installation, and the card is compatible with Windows and Linux operating systems.
Advantages
This dual-port PCIe to RS232 card provides legacy connectivity to maintain operation of serial peripherals without costly system replacements. The included 256-byte FIFO and 16C1050 UART support reduce CPU overhead and improve data throughput. Low-profile bracket support and LED status indicators simplify installation and monitoring in SFF and full-size systems. Broad OS compatibility ensures easy integration into existing Windows and Linux environments.
Suitable for
Point-of-sale (POS) terminals and cash registers
Security and access control systems
Audio/visual installations and control panels
Industrial and manufacturing equipment interfacing
Logistics, freight, and legacy device support
Key specifications
Interface: PCIe 2.0 x1 (host)
Ports: 2 × RS-232 (DB9)
Baud rate: up to 921.6 Kbps per port
FIFO: 256-byte transmit/receive
UART: 16C1050-compatible
Brackets: low-profile and full-height included
LEDs: serial port status indicators
Compatibility: Windows and Linux
Manufacturer part number (MPN): 21050-PC-SERIAL-LP
How to use
Power down the computer and insert the card into an available PCIe x1 slot (or compatible slot). Secure the bracket (choose low-profile or full-height as needed) and reconnect power. Install the appropriate drivers for your operating system if required; the card is supported on Windows and Linux. Connect serial devices to the DB9 ports and verify communication using the device’s software, terminal emulator, or diagnostic LEDs on the card to confirm link and activity.
Usage recommendations
For reliable operation, use quality shielded serial cables, ensure correct COM port settings (baud rate, parity, data bits, stop bits) matching the peripheral, and place the card in a PCIe slot with adequate airflow. Keep drivers up to date and verify that any legacy device voltage and signal requirements conform to RS-232 standards.

## Specifications

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 5 - 95 |
| Storage temperature (T-T) | -40 - 75 |
| Operating temperature (T-T) | 0 - 55 |

### Ports & interfaces

| Feature | Value |
|---|---|
| Serial interface type | RS-232 |
| Serial ports quantity | 2 |
| Host interface | PCIe |
| Output interface | Serial |
| Expansion card standard | PCI 2.0 |
| Expansion card form factor | Full-height / Low-profile |

### Other features

| Feature | Value |
|---|---|
| Material | Steel |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.16 kg |
| Package weight | 160 g |
| Height | 18 mm |
| Width | 66 mm |
| Depth | 67 mm |

### System requirements

| Feature | Value |
|---|---|
| Windows operating systems supported | Windows 11 x64, Windows 7 Home Basic, Windows 7 Enterprise x64, Windows 7 Enterprise, Windows 7, Windows 10 IOT Core, 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, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64, Windows 10 x64, Windows 11, Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home x64, Windows 10 IoT Enterprise, Windows 10 Pro, Windows 10 Pro x64, Windows 10 Home |
| Linux operating systems supported | Y |
| Server operating systems supported | Windows Server 2016, Windows Server 2019 |

### Design

| Feature | Value |
|---|---|
| Internal | Yes |
| Product colour | Yellow |

### Performance

| Feature | Value |
|---|---|
| Chipset | ASIX - AX99100, ASIX - ZT3243LFEY |
| LED indicators | Activity |

### Logistics data

| Feature | Value |
|---|---|
| Master (outer) case height | 340 mm |
| Master (outer) case width | 530 mm |
| Master (outer) case length | 440 mm |
| Products per master (outer) case | 50 pc(s) |

### Packaging data

| Feature | Value |
|---|---|
| Package depth | 144 mm |
| Package height | 38 mm |
| Package width | 207 mm |
| Quick installation guide | Yes |
| Mounting brackets included | Yes |

### Features

| Feature | Value |
|---|---|
| Baud rate | 921.6 Kbit/s |
| Data bits | 5, 6, 7, 8, 9 |
| Parity bit | Even, Mark, N, Odd, Space |
| FIFO (First In, First Out) | 256 |

## FAQ

### How much does the 2-Port PCI Express Serial Interface Card StarTech.com 21050-PC-SERIAL-LP cost, and is it available for purchase?

The price is 70.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 101 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 08.07.2026 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, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can 2-Port PCI Express Serial Interface Card StarTech.com 21050-PC-SERIAL-LP 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 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, product colour, 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.

### Where can I download the instructions for 2-Port PCI Express Serial Interface Card StarTech.com 21050-PC-SERIAL-LP?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/9186981/65750609_large.webp