XK-16 FN Stick

XK-16 FN Stick

Angled Feet for XKE Series

Angled Feet for XKE Series

USB GPIO (General Purpose Input Output)


The X-keys USB GPIO unit features 10 configurable ports which can be 5 volt outputs, short-to-ground inputs, or 5 volt pull down inputs. It also has two more dedicated 5 volt outputs, and four more dedicated short-to-ground inputs.

Availability: In stock
  • Buy 10 for $94.95 each and save 5%

USB Wire Interface


  • 10 configurable Input/Output Ports
  • HID Keyboard, Mouse, and Game Controller Hardware Emulation
  • Free SDKs for Windows, Linux, and Android
  • Internal memory for hardware, resident macros for OS independent support

The ten configurable ports are set with a free Windows utility we provide via download (link). All inputs and are programmable and can send a wide range of USB keyboard, mouse, game controller, multi-media and other proprietary USB HID messages. All outputs can be triggered via USB HID with support from our free SDKs for Windows, OS X, Linux, and Android.

A standard HD15 male connector provides reliable connection to all configurable I/O ports and dedicated outputs. Two 3.5 mm TRS (Tip-Ring-Sleeve, AKA Stereo) ports provide connection to the four dedicated short-to-ground inputs to facilitate the addition of external switches.

Operating System Use: Any OS via USB HID | Programming: Windows XP through 10, Mac OS X 10.4 through 10.10 
Free Programming Software Windows: MacroWorks 3.1
Android: X-keys Android
Free Software Development Kits Windows (C++, C#, VB.NET) 
Linux (C++)
Android (Java)
Raw HID (any language/OS)
USB Codes Supported HID keyboard, HID mouse, HID game controller, HID multimedia
Input Connectors HD15 Male (compatible with HD15 extension cable), 2 x 3.5mm stereo ports
Number of Inputs 10 Total | 5 VDC pull-down inputs
Number of Outputs 5 VDC outputs
Optional Accessories HD15 to Screw Terminal Connector, Wired switches, Y cords, USB Extender
Connector Wired USB standard “A” plug
Cord Length 118" (3 m)
Wiring Distance Up to 1,000 feet (300m) from switch to port
Dimensions 2.55” x 2.55” x 1.01” (65mm x 65mm x 26mm)
Mounting Two 0.19” DIA mounting holes, 3” O.C. (4.8mm DIA, 76mm O.C.)
Weight 6 oz. (160 g)
USB Type USB 1.1 compatible through 3.0 Type-c with adapter
Power Source USB port, nominal voltage = 5 VDC
Power Consumption 31 mA @ 5 VDC
Temperature Range -20 to 60 C
Memory Capacity Approximately 1,000 keystrokes or commands in onboard memory
Memory Type EEPROM, non-volatile memory (X-keys retains memory for over 200 years)
Environmental Rating IP 40, typical indoor office environment
Certifications FCC class B, CE, RoHS, WEEE compliant


Sketchup 3D Model

We offer this Sketchup model as a 3D rendering of the USB HD15 Wire Interface for viewing or planning purposes. Dimensions and details of the model, while reasonably accurate, should not be used for critical specifications.

View or download this model in Sketchup 3D Warehouse.

HD15 GPIO Setup Utility

  • A utility for use with the HD15 GPIO to allow for configuration of the inputs and outputs on the 10 configurable pins.
  • Download: HD15GPIOSetupUtility.zip

MacroWorks 3.1 for Windows (free download)

  • Launch programs, insert Unicode, open files and directories, select tools and more
  • Can write macros to X-keys memory for Hardware Mode macro programming
  • Control backlighting globally or for individual keys
  • Create custom scripting with Visual Basic (Software Mode only)
  • Compatible with Windows 10, 8, 7, and Vista (32 or 64 bit) and Windows XP (32 bit only)
  • Free technical support via email or phone
  • More info...

P.I. Engineering SDK (free download)

  • Microsoft Visual Studio code examples in C# 2008 Express, C++ 2005, and VB.NET 2008 Express
  • Read all key and control states
  • Control all backlighting and indicator LEDs
  • Free technical support via email or phone
  • Linux SDK provides a cross-platform solution for Linux, Windows, and Mac also available

Android Software

  • For X-keys Android devices
  • Read all key and control states
  • Java-based
  • Sets backlighting levels and states
  • Free technical support via email or phone
  • More info...

Resources for Software Developers

P. I. Engineering offers a wide range of options for application developers. Click on any heading to learn more. If you don’t see what you’re looking for here, please contact us (tech@xkeys.com). We have friendly techs and engineers waiting to help you integrate X-keys into your solution.

Windows SDK

Includes comprehensive examples in C#, C++, and VB.NET for Windows desktop development in Visual Studio, as well as Java for Android development in Eclipse. Supported via phone and email during standard business hours by our technical support staff.

Linux SDK

Open source Linux support written in C++. Features code for accessing all X-keys controls and key states and includes a simple, straight forward example GUI. Written by Linux HID expert Alan Ott.</p

Android Samples

Assorted Eclipse projects we have created to demonstrate how to handle various input options (such as joystick and game controller button data) on Android.

HID Data Reports

Learn how to read the X-keys’ raw output and use it to integrate X-keys into your application in any language, on any HID-enabled platform.

X-keys Integration

See how to integrate your X-keys with the Hardware Mode, Software Mode with MacroWorks Software, or the Software Mode with a Custom Application.

Case Studies

See how other developers have implemented X-keys for fun and profit.