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StarTech 2-Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART

B&H # STEC2S952 Mfr # EC2S952
Usually ships in 7-10 business days

Availability Details


This is a special order item. Est. arrival at B&H is 7-10 business days (subject to availability). Your order will be charged at the time of shipment.

International Orders*
For international orders, credit cards will be charged at time you place your order.

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Not eligible for free Expedited Shipping
You Pay: $52.99
Product Highlights
  • Serial Interface
  • Advanced FIFO Fill Management
  • 128-Byte Deep Transmit / Receive FIFOs
  • Baud Rates up to 115.2 kb/s
  • Supports ASPM
  • Reduces CPU Load up to 48%
  • CE, FCC & RoHS Certified
  • Windows, Mac & Linux Compatibility

The 2-Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART from StarTech lets you add 2 RS232 serial ports to your laptop or ExpressCard equipped desktop computer, using an available ExpressCard slot.

Featuring 128-byte FIFO communication and a high-performance 16C950 UART, the ExpressCard serial adapter card offers baud rates up to 115.2kb/s, ensuring peak communication with your serial peripheral devices.

The serial card design is based on single-chip architecture (as opposed to cards that use a bridge chip), providing native PCI Express communication for greater performance and reliability, as well as reduced power consumption and CPU load.

Compatible with 34mm and 54mm ExpressCard slots, the 2-port serial ExpressCard includes a slot spacer for greater security while installed in 54mm slots.

Advanced FIFO fill management
128-byte deep transmit / receive FIFOs
Automated in and out-of-band flow control
The high-performing single chip design optimizes speed, reliability and power while reducing CPU load up to 48%
Compatible with both 34 mm and 54 mm ExpressCard slots; includes a slot spacer for greater security while installed in 54 mm slots
Fully compliant with ExpressCard 1.0 specifications
Standard RS232 DB9 pin-out
Supports ASPM (L0S, L1) link power management
Supports high-performance 16C950 UART with baud rates of up to 115.2 kb/s and backwards compatible with 16C550 UART
Adds to any other serial or legacy device
Embedded system coding, building and diagnostics


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
Self-service automated machines and kiosks to control serial devices such as scales, touch screens, magnetic card readers, bar code scanners, receipt printers, label printers
Standard ATM (automated teller machines) to control keypads, receipt printer, card readers / card swipes, touch screen LCDs, camera control and more
Used to control multiple surveillance / security cameras in a parking structure, office building and more
Interface Serial
Ports 2
Bus Type ExpressCard
Card Type ExpressCard (34 mm)
Port Style Dongle (included)
Chipset ID PLX / Oxford - OXPCIe952
External Ports 2 x DB-9 (9-pin, D-sub) male
Serial Protocol RS-232
Max Baud Rate 115.2 kb/s
Built-in FIFO: 128 bytes
OS Compatibility Windows 8, 7, Vista, XP, 2000
Windows server 2008 R2
Humidity 5~85% RH
Operating Temperature 14 to 176°F (-10 to 80°C )
Storage Temperature -4 to 212°F (-20 to 100°C)
Certificates CE, FCC, RoHS
Dimensions (L x W x D) 4.5 x 1.8 x 0.8" (114.3 x 45.7 x 20.3 mm)
Weight 1.3 oz (36.8 g)
StarTech 2-Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART
  • 2-Port DB9 Break-Out Cable
  • 34 to 54 mm Slot Spacer
  • Driver CD
  • Limited Lifetime Warranty
  • See any errors on this page? Let us know.