Our current generation of pcProx plus model readers will support 4 card configurations. Our older generation does not. The easiest way to determine if your reader will support 4 configurations or not is to look at the label on the back of the reader and check the firmware. If your firmware begins with PLC it will only support 2 configurations. If your firmware begins with LNC it supports 4 configurations.
![](https://cdn.livechat-static.com/api/file/kb/file/8752831/013ecdb6b0-26317ee8693bcfd43742.png)
*please note PLC readers cannot be updated to LNC firmware to support 4 configurations. The new firmware and new card abilities are due to newer hardware within the reader.