> For the complete documentation index, see [llms.txt](https://developer.magtek.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.magtek.com/hardware/card-readers/mms-dyna-devices/dynaflex-ii-go/documents/developers-manuals/programmers-manual-commands/introduction/about-connections-and-data-formats.md).

# About Connections and Data Formats

MMS products transmit data using a set of common data formats across a variety of physical connection layers, which can include universal serial bus (USB) acting as a vendor-defined HID device (“USB HID”), wireless LAN (WLAN), Bluetooth®, Bluetooth® Low Energy (“Bluetooth® LE”), RS- 232, Apple Lightning, and so on. The set of available physical connection types and the data formats available on each connection type is device dependent. **Table 2** shows the physical connection types available on each product, and the data formats supported on each connection type for that device. Details about connection types and formats can be found in **Section 2 Connection Types**. Section headings in this document include tags that indicate which connection types and/or data formats they apply to.

## **Table - Device Connection Types / Data Formats**

<table><thead><tr><th>Product / Connection</th><th width="117.0909423828125">Bluetooth® LE GATT</th><th width="94.3636474609375">RS-232 / UART</th><th width="88.9090576171875">USB HID</th><th width="78.9090576171875">WLAN</th><th width="82.54541015625">iAP2</th><th width="106.8182373046875">Ethernet</th></tr></thead><tbody><tr><td>DynaFlex with USB Only</td><td></td><td></td><td>HID</td><td></td><td></td><td></td></tr><tr><td>DynaFlex w/Bluetooth® LE (MAGTEK INTERNAL ONLY FOR NOW)</td><td>GATT</td><td></td><td>HID</td><td></td><td></td><td></td></tr><tr><td>DynaFlex Pro with USB Only</td><td></td><td></td><td>HID</td><td></td><td></td><td></td></tr><tr><td>DynaFlex Pro w/Bluetooth® LE (MAGTEK INTERNAL ONLY FOR NOW)</td><td>GATT</td><td></td><td>HID</td><td></td><td></td><td></td></tr><tr><td>DynaFlex Pro w/WLAN</td><td></td><td></td><td>HID</td><td>WLAN</td><td></td><td></td></tr><tr><td>DynaFlex Pro w/Ethernet (MAGTEK INTERNAL ONLY FOR NOW)</td><td></td><td></td><td>HID</td><td></td><td></td><td>Ethernet</td></tr><tr><td>DynaProx</td><td></td><td>SLIP</td><td>HID</td><td></td><td>iAP2- USB</td><td></td></tr><tr><td>DynaFlex II with USB Only</td><td></td><td></td><td>HID</td><td></td><td></td><td></td></tr><tr><td>DynaFlex II w/Bluetooth® LE (MAGTEK INTERNAL ONLY FOR NOW)</td><td>GATT</td><td></td><td>HID</td><td></td><td></td><td></td></tr><tr><td>DynaFlex II PED with USB Only</td><td></td><td></td><td>HID</td><td></td><td></td><td></td></tr><tr><td>DynaFlex II PED w/Bluetooth® LE (MAGTEK INTERNAL ONLY FOR NOW)</td><td>GATT</td><td></td><td>HID</td><td></td><td></td><td></td></tr><tr><td>DynaFlex II PED w/WLAN</td><td></td><td></td><td>HID</td><td>WLAN</td><td></td><td></td></tr></tbody></table>

## **Table Device Connection Types / Data Formats**

| Product / Connection                                      | Bluetooth® LE GATT | RS-232 / UART | USB HID | WLAN | iAP2      | Ethernet |
| --------------------------------------------------------- | ------------------ | ------------- | ------- | ---- | --------- | -------- |
| DynaFlex II PED w/Ethernet (MAGTEK INTERNAL ONLY FOR NOW) |                    |               | HID     |      |           | Ethernet |
| DynaFlex II Go with USB Only                              |                    |               | HID     |      | iAP2- USB |          |
| DynaFlex II Go w/Bluetooth® LE                            | GATT               |               | HID     |      | iAP2- USB |          |


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