--- product_id: 1041642 title: "StarTech 2-Port PCI Express RS232 Serial Adapter Card, TAA (PEX2S553)" brand: "startech.com" price: "S/.731" currency: PEN in_stock: true category: "Star Tech.Com" url: https://www.desertcart.pe/products/1041642-startech-2-port-pci-express-rs232-serial-adapter-card-taa store_origin: PE region: Peru --- # 460.8Kbps RS232 speed per port Configurable 12V/5V power on pin 9 Dual DB9 ports via PCIe x1 interface StarTech 2-Port PCI Express RS232 Serial Adapter Card, TAA (PEX2S553) **Brand:** startech.com **Price:** S/.731 **Availability:** ✅ In Stock ## Summary > 🚀 Upgrade your legacy gear with lightning-fast, versatile serial power! ## Quick Answers - **What is this?** StarTech 2-Port PCI Express RS232 Serial Adapter Card, TAA (PEX2S553) by startech.com - **How much does it cost?** S/.731 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/1041642-startech-2-port-pci-express-rs232-serial-adapter-card-taa) ## Best For - startech.com enthusiasts ## Why This Product - Trusted startech.com brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power Your Way:** Customize power delivery on each port with selectable 12V, 5V, or no power options for ultimate device compatibility. - • **CPU Load Reduction:** Native single-chip design reduces CPU overhead by up to 48%, optimizing system performance during heavy serial communication. - • **Plug & Play Versatility:** Includes both standard and low-profile brackets for seamless installation in any desktop or server chassis. - • **Blazing Fast Serial Speeds:** Experience ultra-responsive data transfer up to 460.8Kbps per port, perfect for demanding industrial and professional setups. - • **Cross-Platform Compatibility:** Effortlessly integrates with Windows, Linux, and Mac OS environments, ensuring broad operational flexibility. ## Overview The StarTech PEX2S553 is a high-performance 2-port PCI Express RS232 serial adapter card featuring dual DB9 ports with speeds up to 460.8Kbps. It offers configurable power options per port, supports both standard and low-profile brackets for flexible installation, and is compatible with Windows, Linux, and Mac OS. Its native single-chip design reduces CPU load by nearly half, making it ideal for professional environments requiring reliable serial connectivity. ## Description The PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), and reducing the load applied to the CPU by as much as 48% over conventional serial cards. The RS232 Serial Adapter Card (PEX2S553) is compatible with a broad range of operating systems including Windows and Linux Kernel 2.6.11 to 4.11.x, and MAC OS 10.4 and above. Plus, the serial card includes an optional half-height/low profile bracket that allows the card to be installed in any PCI Express slot, regardless of the size of the computer case. This product is a replacement for our PEX2S552 card. Backed by a StarTech.com 2-year warranty and free lifetime technical support. ## Features - NEW VERSION AVAILABLE: PEX2S953 - 2 PORT SERIAL CARD: Serial controller card w/16550 UART based on ASIX MCS9922CV-AA, allows 2x DB9 ports w/bi-directional RS232 speeds up to 460.8Kbps per port, available 256 byte FIFO buffer - OPTIONAL CONFIGURABLE POWER: PCI Express RS232 Serial Adapter Card provides choice of 12v, 5v, or none through pin 9. Each of the 2 ports are individually configurable - STANDARD PROFILE & LOW PROFILE BRACKET: PCIe multiport serial card comes w/ a standard bracket pre-installed & 2x low profile brackets incl for versatile install; supports Windows & Linux - VERSATILE APPLICATIONS: For standard profile desktop/servers with uses in point of sale terminals, PLCs, control/automation in factories, scientific sensors, medical equipment, scanners, oscilloscope ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0041UJREA | | Best Sellers Rank | #68 in Serial Port Cards | | Brand | StarTech.com | | Built-In Media | 1 x StarTech.com PEX2S553 2-Port PCI Express RS232 Serial Adapter Card with 16550 UART | | Compatible Devices | Personal Computer | | Customer Reviews | 4.4 out of 5 stars 146 Reviews | | Global Trade Identification Number | 00065030841740 | | Hardware Interface | D-Sub, PCI Express x1 | | Item Dimensions L x W x H | 4.1"L x 4.7"W x 0.8"H | | Item Highlight | PCIe to Dual Serial DB9, Windows/Linux, Replaced by PEX2S953 | | Item Type Name | Serial Adapter Card | | Item Weight | 2.08 ounces | | Manufacturer | Startech.com | | Mfr Part Number | PEX2S553 | | Model Number | PEX2S553 | | Number of Items | 1 | | Number of Packs | 1 | | Operating System | Windows 8 Mac OS X Mavericks (10.9) Linux Windows Server 2012 Windows 7 Mac OS X Yosemite (10.10) Windows 10 Windows Server 2016 Windows Server 2019 | | Product Dimensions | 4.1"L x 4.7"W x 0.8"H | | Style | 2 Port | | Style Name | 2 Port | | UPC | 065030841740 | | Unit Count | 1 Count | | Warranty Description | 2 year warranty | ## Product Details - **Brand:** StarTech.com - **Hardware Interface:** D-Sub, PCI Express x1 - **Item Weight:** 0.06 Kilograms - **Product Dimensions:** 4.1"L x 4.7"W x 0.8"H - **Style:** 2 Port ## Images ![StarTech 2-Port PCI Express RS232 Serial Adapter Card, TAA (PEX2S553) - Image 1](https://m.media-amazon.com/images/I/716AqFEihBL.jpg) ## Frequently Bought Together - StarTech.com 2-Port PCI Express RS232 Serial Adapter Card, PCIe to Dual Serial DB9, Windows/Linux, TAA - Replaced by PEX2S553 - StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Card - Windows & Linux , TAA (PEX1S553LP) - StarTech.com PCI Serial Parallel Combo Card with Dual Serial RS232 Ports (DB9) & 1x Parallel LPT Port (DB25) - PCI Combo Adapter Card - PCI Expansion Card Controller - PCI to Printer Card (PCI2S1P2) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/1041642-startech-2-port-pci-express-rs232-serial-adapter-card-taa](https://www.desertcart.pe/products/1041642-startech-2-port-pci-express-rs232-serial-adapter-card-taa) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-10-05*