Easter Opening Hours and Delivery Dates here

StarTech.com PEX2S553LP 2 Port Low Profile PCIe RS-232 Serial Card

Order Code:

19-9779

Brand: StarTech.com MPN: PEX2S553LP EAN-13: 0065030841757
Qty Unit Price (Inc VAT)
1+ £53.41
Price per unit {{ this._page.IncVat ? 'Inc' : 'Ex' }} VAT
Available to back orderBack-order availability date - 07/04/2026

The StarTech.com PEX2S553LP low profile/half-height PCI Express Serial Card turns a PCI Express slot into 2 x RS232 (DB9) serial connections. 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 Adaptor Card is compatible with a broad range of operating systems, including Windows, Linux Kernel 2.6.11 and up. It ships with a low profile/half-height bracket installed but includes an optional full profile bracket that lets you add 2 x serial ports to virtually any computer (regardless of the case form factor).

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


  • Bus type: PCI express
  • Card type: Low profile (SP bracket included)
  • Connector type(s): PCI express x1 male
  • External ports: DB-9 (9 pin, D-Sub) male
  • Internal ports: LP4 (4 pin, Molex large drive power) male
  • Max baud rate: 460.8 kbps
  • OS compatibility: Windows, Linux
  • Product dimensions: 105 x 80 x 20mm
  • Manufacturer's part no.: PEX2S553LP

This product is a replacement for the PEX2S552LP card.
Type PCIe to RS-232 adaptor
Baud rate 460.8 Kbit/s
Cables included Serial
Chipset ASIX - MCS9922CV-AA
Compliance certificates CE, RoHS
Depth 105mm
Drivers included Yes
Expansion card standard PCIe 1.1
FIFO (First In, First Out) 128 B
Flow Control type DTR/DSR, RTS/CTS, XON/XOFF
Harmonized System (HS) code 84733020
Height 20mm
Host interface PCIe
Interface Serial RS-232 x 2
Internal Yes
Linux operating systems supported Yes
Manual Yes
Master (outer) case height 320mm
Master (outer) case length 684mm
Master (outer) case width 363mm
Mounting brackets included Yes
Operating relative humidity (H-H) 5 - 85%
Operating temperature (T-T) -10 - 80 °C
Other operating systems supported DOS, Windows XP Embedded
Output interface Serial
Package depth 173mm
Package height 32mm
Package weight 180 g
Package width 143mm
Peripheral (Molex) power connectors (4-pin) 1
Product colour Green
Products per master (outer) case 50 pc(s)
Serial interface type RS-232
Serial ports quantity 2
Storage temperature (T-T) -20 - 100 °C
Weight 63.5 g
Width 80mm

To use this facility please Sign In.

Sign In

Reviews

Be the first to submit a review

Trustpilot