Why do some plus readers have 4 configurations while others only have 2?
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.
*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.