Support Document

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IOX-HID (Discontinued)

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The IOX-HID allows the GO™ device to interface with an HID card reader to read multiple ID cards. Common use cases include tracking workers in a crew cab or passengers in a transportation vehicle, such as a school bus.

Top Features

  1. Easy-to-install
  2. Identify and track multiple passengers on one vehicle
  3. Extract data from MyGeotab™ using the Geotab® SDK

IOX Hardware Technical Specifications


140 g


Overall length: 4355mm

Widest Point: 38mm W x 15mm H


Black, moisture-resistant thermoplastic overmold


CAN: 500Kb/s; for daisy chaining

Power Output

Interface: 900mA @ 12V/24V

Daisy Chaining: 2500mA @ 12V/24V

Current Rating

Operating Mode: 30mA

Sleep Mode: 0.2mA

Temperature Rating

-40℃ to +85℃


Male Mini-USB Type-B connector: Daisy chain power & CAN in

Female Mini-USB Type-B connector: Daisy chain power & CAN out

Dual Wire: Device Power


Male Mini-USB connector connects to the GO Device or another IOX™

Female DB9 connects to a serial device

Compatible Devices


Installation Instructions

✱ NOTE: Professional Installation Required — Installation of the IOX-HID requires the installer to have sufficient technical knowledge and expertise for mobile device installation and integration into modern vehicles, such as a Certified Geotab® Installer certification or equivalent.

! IMPORTANT: The GO device must be disconnected from the vehicle prior to installation. Following installation, you must read and follow Important Safety Information and Limitations of Use for this harness/IOX. Additionally, you must read and follow all Instructions and Warnings to prevent serious injury and/or vehicle damage.

WARNING! Prior to IOX-HID installation, read and follow GO device installation instructions ( to verify any existing GO device installation is correct in preparation for IOX-HID installation. Incorrect installation of either the GO device, and/or IOX-HID can result in loss of vehicle control and serious injury.

WARNING! Prior to IOX-HID installation, read and follow Important Safety Information and Limitations of Use, located at the end of the document. Always read and follow all safety information to prevent loss of vehicle control and serious injury.


Start with the Geotab GO device unplugged from the vehicle. Remove the IOX expansion port cover on your GO device.


Plug in the 90° USB connector of the IOX to the GO Device. Secure the USB connector using a zip tie, being careful not to over tighten it, thereby possibly damaging the USB connector.

Note: The USB connector can only be inserted in one orientation (see image).


Connect the IOX-HID to the HID RFID Card Reader. The wires on the IOX-HID are labelled and colours based on their function and the designations are: P1-3 Black (Ground), P1-4 Red (Power), P2-6 Purple (Receive, RX) and P2-7 Green (Transfer, TX). The specification sheets can be found on the HID website through the links in the ‘Supported Readers’ section below.


Choose an appropriate mounting location for the HID accessory. Keep in mind that the location you have chosen for the GO Device will influence the locations available to mount the accessory due to the length of wiring on the IOX-HID. The installation must not interfere with safe vehicle operation.


Once your connections to the IOX-AUXM wiring have been made, connect the GO device and immediately start the vehicle. The GO device will enter debug mode.


Navigate to to verify that the device is communicating. In the space provided, enter your name, the company name, and the GO device serial number — found at the bottom of the device. Click Log Install.


After you click Log Install, the web page displayed the current communication status of the device — in GREEN or RED text. If the device is communicating, the status is displayed in GREEN text. If the device is not communicating, the status is displayed in RED text.

Note: If the device is not communicating, please ensure the device is installed correctly and try again.

Termination Shunt

You may notice your IOX comes with a termination shunt installed in the expansion port. If you are installing more than one IOX in a daisy chain you will need to remove the shunt from each device in line, with the exception of the last IOX connected. That shunt must remain in the last IOX and should be secured with a zip tie.

The use of the shunt in the last IOX is necessary for the GO Device to detect and configure the IOX as effectively as possible.

NOTE: Failing to install the shunt in the last IOX could affect IOX communication. It is recommended that you secure the shunt using a zip tie if not already done.


The IOX-HID cannot be used in conjunction with the IOX-NFCREADER.


Supported Readers

The IOX-HID supports a number of readers provided by HID (listed below). Geotab recommends and has tested with the RW400 model.

  1. RW400 Reader/Writer 6121 Wall Switch Smart Card Reader
  2. RWK400 Reader/Writer Keypad Reader
  3. RWKL550 LCD Keypad Reader 6171 - Discontinued

Card Compatibility

The iCLASS RW400 reader is compatible with all iCLASS credentials. The reader's versatility allows it to read credentials meeting several ISO standards:

  1. 15693 — read/write; 2k bit (256 Byte), 16k bit (2k Byte) and 32k bit (4k Byte) iCLASS credentials
  2. 14443A — read only; MIFARE (serial number)
  3. 14443B — read/write; 16k bit (2k Byte) iCLASS credentials

IOX-HID Data in MyGeotab

When a card is read by the HID Reader and its ID is passed through the IOX-HID, it does not populate or go through the MyGeotab Driver ID system as it’s not intended for Driver ID purposes, but rather as a passenger tracking device. If needed for Driver ID, the reseller or other partner could capture the HID IDs from MyGeotab as they come in using the SDK, and then push back Driver IDs into MyGeotab, again using the SDK, to populate the Driver ID.

Important Safety Information and Limitations of Use

For the latest version of Limitations of Use, please visit:

WARNING! Do not attempt to install, configure or remove any product from any vehicle while the vehicle is in motion or otherwise in operation. All installation, configuration or removal must be done only in stationary vehicles which are securely parked. Attempting to service units while being operated could result in malfunctions or accidents, leading to death or serious personal injury.

WARNING! All in-vehicle devices and related cabling must be securely fastened and kept clear of all vehicle controls, including gas, brake and clutch pedals. You must inspect devices and cabling on a regular basis to ensure all devices and cabling continue to be securely attached. Loose cabling or devices may impede the use of vehicle controls, resulting in unanticipated acceleration, braking or other loss of vehicle control, which could lead to death or serious personal injury. Improperly fastened in-vehicle devices may detach and impact operators upon sudden acceleration or deceleration, which may cause injury.

WARNING! If at any point after an in-vehicle device is installed a warning light illuminates on the vehicle dash or the vehicle stalls or has a marked drop in performance, shut off the engine, remove the device, and contact your reseller. Continuing to operate a vehicle with these symptoms can cause loss of vehicle control, and serious injury.

WARNING! Your in-vehicle devices must be kept clear of debris, water and other environmental contaminants. Failure to do so may result in units malfunctioning or short-circuiting that can lead to a fire hazard or vehicle damage or serious injury.

WARNING! Do not attempt to remove the devices from the vehicle in which they are originally installed for installation in another vehicle. Not all vehicles share compatibility, and doing so may result in unexpected interactions with your vehicle, including sudden loss of power or shutdown of the vehicle’s engine while in operation or cause your vehicle to operate poorly or erratically and cause death or serious injury and/or vehicle damage.

NOTICE: This product does not contain any user-serviceable parts. Configuration, servicing, and repairs must only be made by an authorized reseller or installer. Unauthorized servicing of these products will void your product warranty.