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STARTECH
Item#:
9SIA97TKPY4387
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STARTECH;PEX4S553B;PEX4S553 The PEX4S553 4-Port Native PCI Express - StarTech.com
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StarTech.com 4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART Model PEX4S553
(2)
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Add 4 RS-232 serial ports to your standard or small form factor computer through a PCI Express Expansion Slot
4 Port PCIe Serial Card
4 Port RS232 Card
4 Port Serial Adapter
4 Port PCI Express Serial Card
PCI Express DB9 Serial Card
16550 UART
Standard and low profile /half-height brackets included
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Overview
Specs
Reviews
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Add 4 RS-232 serial ports to your standard or small form factor computer through
Learn more about the STARTECH PEX4S553
Model
Brand
StarTech.com
Model
PEX4S553
Details
Type
PCI Express to Serial Port Card
External Ports
4 x Serial Ports
Operating Systems Supported
Windows XP(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)
Windows Server 2003(32/64 bit), 2008 R2
Linux
Features
Features
Built-in 16C450/550 compatible UART
Compliant with PCI Express Base Specification 1.1
Four high speed RS232 serial ports, with support for data transfer rates up to 128000bps
Native single-Chip, single lane PCI Express
Includes half-height/low profile mounting brackets
256-byte deep FIFO per transmitter and receiver
Chipset ID: Moschip MCS9904CV-AA
Dimensions & Weight
Dimensions
0.75" x 4.72" x 5.12"
Weight
2.82 oz
Additional Information
First Listed on Newegg
December 20, 2025
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STARTECH PEX4S553
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Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
Return for refund within: 30 days
Return for replacement within: non-replaceable
This item is covered by
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