# Installation and User Guidance
### Initial Inspection
After receiving the device, the customer should visually inspect the product as follows:
* Inspect the label found on the bottom of the device (see section 2.3.1 Hardware Identification) and make sure the label is not missing, obscured, or modified.
* Check the PCI Hardware Identifier on the device label and make sure it matches the Hardware # listed for the device on the PCI web site for Approved Devices. Go to the PCI compliance web page and search for MagTek, and find the product name, DynaFlex II Go. Compare the Hardware ID and Firmware ID:
{% hint style="info" %}
Note: Firmware ID is accessible by connecting DynaFlex II Go to a host device via USB or Bluetooth LE, using the latest software provided by MagTek (see section 2.3.2 Firmware Identification).
{% endhint %}
* Check the Device serial number (SN) and make sure it matches with labels on shipping materials and documentation.
* Visually inspect the device, per D998200593 DynaFlex II Go, Device Inspection Document, which is included in the package with each device. See section 4.1 Periodic Inspection for more information regarding visual inspection of the device.
* Follow the steps in section 2.3.2 to view the PCI firmware versions installed on the device. Make sure this matches one of the Firmware # values listed on the PCI web site for DynaFlex II Go. Note that in PCI listings, lowercase “x” is a wildcard meaning ‘any single character.’
### Installation
Connect the device to a USB host for control and power (if battery power is not sufficient). DynaFlex II Go products are designed to provide flexible mounting options such as:
* External clip
* Embedded lanyard
### Environmental Conditions
The specified environmental conditions to operate and store the device are:
* Operating temperature range: 0°C to 35°C / 5% to 90% RH
* Storage temperature range: -20°C to 45°C / 5% to 90% RH
For safety, battery charging is disabled when the device is outside the recommended operating temperature range.
The security of the reader is not compromised by altering the environmental conditions outside the stated operating ranges above. Any temperature or operating voltage outside the values in the table below will trigger environmental security protections, resulting in a tamper condition. The device will need to be returned to the factory for inspection before this condition can be cleared.
| | |
|---|
| Sensor | Low Threshold Value | High Threshold Value |
| Internal Voltage | 1.60V ± 0.055V | 3.775V ± 0.1V |
| Temperature | -45°C ± 15°C | 120°C ± 10°C |
### Communications and Security Protocols
DynaFlex II Go products support a USB interface using the USB-HID protocol, and a Bluetooth LE interface. Transactions, configuration, firmware updates, and key injection can all be performed using these interface types. Use of any method not listed in this security policy will invalidate the device’s PCI PTS approval.
The device requires Bluetooth LE hosts to use version 4.2 or higher and use LE Security Mode 1 Level 4 (Secure Connections) only. “Just Works” cannot be used at any time. The device does not support or allow for the use of insecure communication options such as, but not limited to, LE Security Mode 2, and levels 1, 2, and 3 of LE Security Mode 1 and the “Just Works” secure pairing option of Security Mode 1.
### Configuration Settings
DynaFlex II Go products ship from the factory fully secure. The devices have no configuration settings that require modification by the user to meet PCI security requirements.
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