Startech 2 Port PCIe LPT, RS232 Serial Board

  • RS Stock No. 898-8557
  • Mfr. Part No. PEX2S5531P
  • Manufacturer Startech
Product overview and Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TW
Product Details

PEX2S5531P PCI Express Card

The PEX2S5531P 2S1P PCI Express Card turns a PCI Express slot into two RS232 (DB9) serial ports and one Parallel port. The adapter card features a native PCI Express single chip design that allows you to take advantage of full PCI Express capability, providing improved speed and reliability while reducing the load applied to the CPU by as much as 48% over conventional serial cards which use a bridge chip design.
Compatible with a broad range of operating systems including Windows® 2000/XP/2003/Vista™/Windows 7/Server 2008 R2 (32 and 64-bit), Linux Kernel 2.6.11 and up, and MAC OS 10.4, this 2 Port Serial 1 Port Parallel PCI-Express Card also features an optional low profile/half-height bracket that allows the card to be installed in virtually any computer case, regardless of the case form factor.
This product is a replacement for our PEX2S5521P card.
Backed by a Lifetime warranty and free lifetime technical support.

Features & Benefits

• Two high speed RS232 serial ports with data transfer rate up to 460.8 Kbps
• One parallel port with data transfer rate up to 1.5 Mbps
• Compliant with PCI Express base specifications revision 1.0a
• 128-byte deep FIFO per transmitter and receiver
• Configurable in 5V, 12V, and RI (non-powered) modes
• Selectable power output on pin 9 for the serial port
• Native single-chip, single lane PCI Express
• Automated out-of-band flow control using CTS/RTS and DSR/DTR
• Automated in-band flow control using programmable Xon/Xoff in both directions
• 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


• Self-service automated machines and kiosks to control serial devices such as scales, touchscreens, magnetic card readers, bar code scanners, receipt printers, label printers
• 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 / pin pads, pen pads
• 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.

What’s in the package?

• 2 Port PCI-Express Serial Card
• Parallel port (with ribbon cable)
• Low Profile Brackets
• Driver CD
• Instruction Manual


Will I need to plug in power to this serial card from my power supply?

Serial cards derive power from the PCI or PCI Express slot on the motherboard. When you power serial devices from the serial card ports, the power provided by the slot may not be enough to power all of the devices and you should connect additional sources of power from the power supply. When you troubleshoot issues, you should connect an additional source of power. Some signs that you are experiencing power-related issues include certain devices not working correctly, not all of the devices working at the same time, and certain devices not working at all.

PCI ExpressCards RS-232

PCI Express (PCIe) is a serial I/O technology that has been designed to deliver significantly more data than the existing PCI standard, with a transfer rate of 2.5Gb/s in each direction per lane. PCIe is expected to replace PCI on all new personal computers to the end of this year. Initially, personal computers will have both PCI and PCIe slots available. Drivers for all popular operating systems including Windows 7.

Attribute Value
Bus Type PCIe
Communication Interface Parallel, Serial
Number of Ports 2
Connection Port LPT, RS232
Maximum Baud Rate 460.8kbit/s
FIFO Size 128 B
16 In stock for delivery within 6 working days
Price (VAT excluded) Each
TWD 1,419.00
(exc. GST)
TWD 1,490.00
(inc. GST)
Per unit
1 +