MSI Z97S SLI PLUS Manual page 38

JCOM1: Serial Port Connector
This connector is a 16550A high speed communication port that sends/receives 16
bytes FIFOs. You can attach a serial device.
JTPM1: TPM Module Connector
This connector connects to a TPM (Trusted Platform Module). Please refer to the TPM
security platform manual for more details and usages.
En-24