Compatibility Check: QY-B5400 vs. C-Plot Nav+ Requirements
Processor:

C-Plot Nav+ recommends Intel Core I5 or I7 (I7-1165G7 or better preferred)
QY-B5400 supports I5-10210U / I7-10610U (both are newer and should be compatible)
Memory (RAM):
C-Plot Nav+ requires 16GB or more
QY-B5400 supports up to 32GB DDR4 RAM, so it meets the requirement
Storage:
C-Plot Nav+ requires 512GB SSD or more
QY-B5400 offers MSATA SSD up to 1TB, so it meets the requirement
Power Input:
C-Plot Nav+ requires 12V-24V DC
QY-B5400 supports DC 9-36V (includes 12V-24V range), so it meets the requirement
Cooling System:
C-Plot Nav+ requires Fanless system
QY-B5400 has Fanless conduction heat dissipation, so it meets the requirement
Waterproofing:
C-Plot Nav+ requires IP67 fully sealed
QY-B5400 has IP66 waterproofing (slightly lower than IP67 but still offers strong water resistance)
Construction:
C-Plot Nav+ requires Rugged stainless steel or aluminum
QY-B5400 is fully enclosed in aluminum alloy, so it meets the requirement
Required Connectivity
Serial Port (RS232/RS422):

C-Plot Nav+ requires 1X Serial Port (RS232/RS422) for NMEA 0183
QY-B5400 has 2X RS-232/422/485 + 4X RS-232 (more than required), so it meets the requirement
USB Serial Ports:
C-Plot Nav+ requires 2X USB serial ports
QY-B5400 has 4X USB 2.0, so it meets the requirement
Ethernet Port:
C-Plot Nav+ requires 1X Ethernet port
QY-B5400 has 2X LAN ports (Intel I210V, 10/100/1000 Mbps), so it meets the requirement
WiFi (Preferred but Optional):
C-Plot Nav+ prefers Built-in WiFi
QY-B5400 supports WiFi modules via Mini PCIe/M. 2 slots, so it meets the requirement