Startech 4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART PEX4S553

Features

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Startech's MPN:

PEX4S553

Add 4 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot

Four high speed RS232 serial ports, with support for data transfer rates up to 128000bps
256-byte deep FIFO per transmitter and receiver
Native single-Chip, single lane PCI Express

The PEX4S553 4-Port Native PCI Express RS232 Serial Adapter Card with 16550 UART lets you add 4 RS232 (DB9) serial ports, using a single PCI Express expansion slot.

Based on a native single-chip design, this 4-port serial adapter card allows you to 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 RS232 Serial Adapter Card includes 4 half-height/low-profile brackets, allowing the card to be installed into almost any PC case, regardless of form factor.

Backed by a StarTech.com Lifetime warranty and free lifetime technical support.

The StarTech.com Advantage

Native single-chip, single lane PCI Express chipset delivers true PCIe performance, up to 48% more efficient than bridge chip designs
Standard and low profile/half-height brackets included to ensure fitment in any system

Applications

POS retail applications in grocery stores, and any other retail store to control keyboards, cash drawers, receipt printers, card readers / card swipes, scales, and elevated displays on poles
Bank teller workstations in either full profile or low profile versions to control their serial devices such as cash drawers, card readers / card swipes, printers, keypads / pinpads, pen pads
Self-service automated machines and kiosks to control serial devices such as scales, touchscreens, magnetic card readers, bar code scanners, receipt printers, label printers
Standard ATM automated teller machines to control keypads, receipt printer, card readers / card swipes, touchscreen LCD's, camera control, etc.
Used to control multiple surveillance / security cameras in a parking structure, office building, etc.

Warranty Information
Warranty	Lifetime
Hardware
Bus Type	PCI Express
Card Type	Standard Profile (LP bracket incl.)
Chipset ID	ASIX/MosChip - MCS9904CV-AA
Interface	Serial
Port Style	Integrated on Card
Ports	4
Performance
Data Bits	5, 6, 7, 8
FIFO	256 bytes
Max Baud Rate	128 Kbps
MTBF	26,280 Hours
Parity	5, 6, 7, 8
Serial Protocol	RS-232
Connector(s)
Connector Type(s)	1 - PCI Express x1 Male
External Ports	4 - DB-9 (9 pin, D-Sub) Male
Software
Microsoft WHQL Certified	Yes
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 Mac OS® 10.4 to 10.10 Linux 3.5.x to 4.4.x LTS Versions Only
Environmental
Humidity	5~85% RH
Operating Temperature	0°C to 50°C (32°F to 122°F)
Storage Temperature	-20°C to 60°C (4°F to 140°F)
Physical Characteristics
Color	Green
Product Height	0.7 in [19 mm]
Product Length	4.7 in [120 mm]
Product Weight	2.8 oz [80 g]
Product Width	5.1 in [130 mm]
Packaging Information
Shipping (Package) Weight	0.5 lb [0.2 kg]
What's in the Box
Included in Package	1 - 4 Port PCI-Express RS-232 Serial Card
	1 - Bracket with 2 DB9 male ports
	4 - Low Profile Brackets
	1 - Driver CD
	1 - Instruction Manual

4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART

Brand Name: StarTech.com

Form Factor: Plug-in Card

Host Interface: PCI Express x1

Number of Serial Ports (External): 4

Product Type: Serial Adapter

Basic
Brand Name:	StarTech.com
Form Factor:	Plug-in Card
Host Interface:	PCI Express x1
Number of Serial Ports (External):	4
Product Type:	Serial Adapter

General Information
Brand Name:	StarTech.com
Manufacturer Part Number:	PEX4S553
Manufacturer Website Address:	http://www.startech.com/au
Manufacturer:	StarTech.com
Packaged Quantity:	1
Product Name:	4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART
Product Type:	Serial Adapter

Interfaces/Ports
Number of Serial Ports (External):	4

Physical Characteristics
Card Height:	Dual-profile
Form Factor:	Plug-in Card
Height:	17.8 mm
Length:	119.4 mm
Weight (Approximate):	79.4 g
Width:	129.5 mm

Technical Information
Data Transfer Rate:	1 Mbit/s
Host Interface:	PCI Express x1
Platform Supported:	PC
UART Type:	16550
	16C450

Warranty
Limited Warranty:	2 Year

Information

SKU/Item No 538053

Vendor Part No PEX4S553

UPC/EAN Number 065030843553

Our Stock ** (click for more info)

Price

$170.52

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Product link	No link
Manufacturer's link	Startech
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* Indication only, please consult the supplier stock level below.
** This is the stock level in our warehouse.
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Stock Information

	Our Qty in Stock	Availability and ETA
Our own stock	0	Usually 1-3 days (when supplier has stock)
	Supplier's Qty in Stock	Availability and ETA	Updated
Supplier one	0	TBA	5/09/25 09:10AM
Supplier two	7		6/09/25 09:10AM