# STARTECH 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 (PEX1S553LP) (PEX1S553LP)

Add a RS-232 serial port to your standard or small form factor computer through a PCI Express expansion slotThe PEX1S553LP PCI Express Serial Card turns a PCI Express slot into an RS232 (DB9) serial connection.The card is constructed using a native single chip design that lets you harness the full capability offered by PCI Express (PCIe), while reducing the load applied to the CPU by as much as 48% over conventional bridge chip serial cards.The PCI Express RS232 Serial Adapter Card is compatible with a broad range of operating systems, including Windows® and Linux Kernel 2.6.11 to 4.11.x, and ships with a low profile/half-height bracket installed, but includes an optional full profile bracket that lets you add a serial port to virtually any computer (regardless of the case form factor).This product is a replacement for our PEX1S552LP card.Backed by a StarTech.com 2-year warranty and free lifetime technical support.The StarTech.com Advantage

## Details

- **Price:** 82.99 AUD
- **Vendor:** STARTECH
- **Type:** Interface Cards & Adapters
- **Tags:** Dicker, Ingram

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 82.99 AUD | In stock |

## Images

- STARTECH 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 (PEX1S553LP) (PEX1S553LP)
- STARTECH 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 (PEX1S553LP) (PEX1S553LP)
- STARTECH 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 (PEX1S553LP) (PEX1S553LP)
- STARTECH 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 (PEX1S553LP) (PEX1S553LP)
- STARTECH 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 (PEX1S553LP) (PEX1S553LP)

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> Source: [TechForGood](https://techforgood.com.au/products/startech-com-1-port-pci-express-rs232-serial-adapter-card-pcie-rs232-serial-host-controller-card-pci)
> Updated: 2026-07-20