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50-pin Universal Spring-Cage Terminal Board


  • 50-pin spring-cage terminal board
  • 45 degree angled spring-cage terminals for convenient installation
  • Spring-cage terminals accept 24 to 16 AWG wire
  • Silk screen labeling clearly identifies terminal to corresponding pin number
  • Lowest cost approach for breakout of I/O signals to individual terminals
  • Mount to board, DIN-Rail, enclosure, panel, or plate
  • Small PC/104 and USB/104-size footprint (3.775" X 3.550")
  • Designed, made, supported, and manufactured in the USA

The STB-50U spring-cage terminal board allows you to break out signals from an I/O board to spring-cage terminals for easy field signal wiring of relays, sensors, and switches commonly found in industrial environments. It features a standard 50-pin male connector and can be used with any I/O board that has a compatible 50-pin mating connector. Terminal pins are clearly labeled to identify pin number.

The STB-50U can be mounted using the provided 4/40 x Ĺ inch standoffs to a panel or plate. Additionally, the board can be mounted directly to the enclosure of the USB-DIO-32, USB-DIO-32I and USB-CTR-15 series of USB modules. With the purchase of the MP104-DIN accessory, the STB-50U can be mounted directly to a DIN-Rail. For OEMs using ACCES USB boards, the STB-50U can be mounted directly to the board itself using the provided standoffs.

Typical mating cables are industry-standard flat 50-pin ribbon cables used to connect with a variety of ACCES I/O's analog and digital I/O products, including USB, PC/104, and PCI-Express products.

The universal nature of the STB-50U allows for easy connectivity to a variety of ACCES I/O products. Itís compact and small (3.775" X 3.550"), ideal for tight spaces. What makes the STB-50U spring-cage terminal board unique is that its PCB size and pre-drilled mounting holes match the USB/104 and PC/104 form factors. This ensures a variety of easy and flexible installation and mounting options using standard standoffs.

For old-school applications this product is useful with many of our legacy ISA and PCI digital I/O products.

Available Datasheets

Drivers and Downloads

Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents

Custom Software

ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.

Further information about available ACCES Software:

Redistributing Windows Drivers
A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.
ModelPrice (USD)
STB-50U Kit69.00

STB-50U50-pin spring-cage terminal board
STB-50U KitUsed for mounting the STB-50U to the enclosure of the USB-DIO-32, USB-DIO-32I, and USB-CTR-15 series of USB products. Includes STB-50U, cable and specialized mounting hardware.
CAB50F-1.0050-pin female to female ribbon cable, 1.0 inches long. $12
CAB50F-1.7550-pin female to female ribbon cable, 1.75 inches long. $12
C104-50F-1250-pin ribbon cable with female headers, 12" long $15
CAB50F-650 pin ribbon cable with female header connectors, 6 feet long $30
104-HDW-KIT (X)Hardware kit for stacking boards; includes 4 screws, nuts and standoffs. Specify metric (M) or standard (S). $10
MP104-DINDIN rail mounting provision $19
Acquisition, Control, Communication: Engineering and Systems