This article addresses the VID/PID used on the Elo 5503L Digital Signage monitor.

A VID is a 16-bit vendor number (Vendor ID). A PID is a 16-bit product number (Product ID). 
VID and PID of 5503L monitors as of this writing (4/4/2022) 

The PCAP version of the 5503L is as follows:
VID: 0x04E7
PID: 0x0865

The IR version of the 5503L is as follows:
VID: 0x1FF7
PID: 0x0013