STARTECH.COM PEX2S553
2-port PCI Express RS232 Serial Adapter Card - PCIe to Dual Serial DB9 RS-232
Key facts
- Part number
- PEX2S553
- Brand
- STARTECH.COM
- Category
- Adapters
- Price
- AUD 106.69≈ USD 73.73 Reference price (RRP)
- Availability
- On request — ask for a quote
Overview
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.
Specifications
General
- Number of Serial Ports (External)
- 2
- Additional Information
- Native single-chip, single lane PCI Express chipset delivers true PCIe performance. Standard and low profile/half-height bracket included to ensure fitment in any system. Easy to install and use with full step-by-step instructions saving time and hassle. OS Compatibility: Windows® DOS, 95, 98SE, 2000, CE 5.0/6.0, Embedded System 2009, POS Ready 2009, XP Embedded, XP, Vista, 7, 8, 8.1, 10 Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019 Mac OS X® 10.4 to 10.10 Linux kernel 2.6.x to 4.11.x LTS Versions only
- Package Contents
- 2 Port PCIe Serial Adapter Card with 16550Standard and Low profile/half-height Bracket
- Environmentally Friendly
- Yes
- Product Type
- Serial Adapter
Manufacturer Website Address
- Product Model
- PEX2S553
- Product Name
- 2 Port PCIe Serial Adapter Card with 16550
- Platform Supported
- Linux
PC
- UART Type
- 16550
- Weight (Approximate)
- 62.4 g
- Form Factor
- Plug-in Card
- Length
- 104.1 mm
- Height
- 20.3 mm
- Width
- 119.4 mm
- Card Height
- Half-height/Low-profile
Reference price history
Recorded reference and list prices over time. Not Prology selling prices.
- Latest
- AUD 106.69≈ USD 73.73
- Oct 2026
- Lowest recorded
- AUD 106.69≈ USD 73.73
- Highest recorded
- AUD 106.69≈ USD 73.73
- Recorded
- 2026
- 1 price point
AUD 106.69 rrp, recorded
Buy or sell STARTECH.COM PEX2S553
Buying STARTECH.COM adapters
Looking to buy the STARTECH.COM PEX2S553 or a compatible adapter? Prology supplies new, refurbished and used STARTECH.COM adapters in Australia and the United States. Send the part number and quantity for a firm price.
Selling STARTECH.COM adapters
Have a spare or decommissioned PEX2S553? Prology buys used and surplus STARTECH.COM adapters — single units or whole lots — and replies with an offer within 1 business day. Sell your PEX2S553.
- What is the STARTECH.COM PEX2S553?
- The STARTECH.COM PEX2S553 is a STARTECH.COM adapter – 2-port PCI Express RS232 Serial Adapter Card - PCIe to Dual Serial DB9 RS-232 Controller.
- How much does the STARTECH.COM PEX2S553 cost?
- The reference price on record is AUD 106.69 (Oct 2026). It is a reference figure, not a selling price — ask Prology for a firm quote.
- Where can I buy the STARTECH.COM PEX2S553?
- It is not listed on the Prology store yet. Prology sources STARTECH.COM adapters on request — request a quote and we reply with a firm price and lead time within 1 business day.
- Can I sell a used STARTECH.COM PEX2S553?
- Yes. Prology buys used and surplus STARTECH.COM adapters, including the PEX2S553. Get an offer — sell outright or trade in against your next order.
Request a quote for PEX2S553
Tell us the quantity and condition you need. Prology replies with a firm price and lead time within 1 business day.