StarTech.com PEX4S553 4 Port Native PCI Express RS232 Serial Adapter Card

MPN
PEX4S553
Brand
StarTech.com
EAN-13
0065030843553
Order Code
19-9785
Country of Origin
China
Qty Was Unit Price (Ex VAT)
1+ £105.88 £97.74
Price per unit {{ this._page.IncVat ? 'Inc' : 'Ex' }} VAT
Available to back orderBack-order availability date - 07/07/2026

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

Based on a single-chip design, this 4-port serial adaptor 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 Adaptor Card includes 4 half-height/low-profile brackets, allowing the card to be installed into almost any PC case, regardless of form factor and is backed by a lifetime warranty and free lifetime technical support.


  • Bus type: PCI express
  • Card type: Standard profile (LP bracket included)
  • Colour: Green
  • Connector type(s): PCI express x1 male
  • External ports: DB-9 (9 pin, D-Sub) male
  • Interface: Serial
  • Max baud rate: 128 kbps
  • OS compatibility: Windows® 10, 8 / 8.1, 7, Vista, XP
  • Ports: DB-9 (9 pin, D-Sub) male, 4
  • Product dimensions: 130 x 120 x 19mm
  • Manufacturer's part no.: PEX4S553
Type USB Adapter
Interface Serial RS-232
Baud rate 128 Kbit/s
Certification CE, FCC, REACH
Chipset ASIX - MCS9904CV-AA
Compliance certificates RoHS
Data bits 5, 6, 7, 8
Depth 120mm
Drivers included Yes
FIFO (First In, First Out) 256 B
Harmonized System (HS) code 84733020
Height 19mm
Host Interface PCIe
Internal Yes
Linux operating systems supported Yes
Manual Yes
Mean time between failures (MTBF) 26280 h
Mounting brackets included Yes
Operating relative humidity (H-H) 5 - 85%
Operating temperature (T-T) 0 - 50°C
Other operating systems supported Windows Embedded POSReady 2009, Windows Embedded Standard 2009, Windows XP Embedded
Output interface Serial
Package depth 170mm
Package height 30mm
Package weight 230g
Package width 141mm
Quantity 1
Serial interface type RS-232
Serial ports quantity 4
Storage temperature (T-T) -20 - 60°C
Weight 74g
Width 130mm

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