MSP430FR5994: Connections needed for UART communication

Part Number: MSP430FR5994
Other Parts Discussed in Thread: MSP-EXP430FR5994,

Hi. I am following the MSP430 UART sample code for use in the MSP-EXP430FR5994 Dev Kit. In the code, pins 6.0 and 6.1 are used as output and input, respectively. However, I was wondering what 6.0 and 6.1 need to be connected to for UART to work. Is it another USB port (not the usual USB connection) back to the computer I'm running CCS on, where the input and outputs will be displayed on the CCS Terminal? Or is it something else?

The code, for clarity:

#include <msp430.h>

int main(void)
{
    WDTCTL = WDTPW | WDTHOLD;               // Stop Watchdog


    // Configure GPIO
    P6SEL1 &= ~(BIT0 | BIT1);
    P6SEL0 |= (BIT0 | BIT1);				// USCI_A3 UART operation

    // Disable the GPIO power-on default high-impedance mode to activate
    // previously configured port settings
    PM5CTL0 &= ~LOCKLPM5;

    // Startup clock system with max DCO setting ~8MHz
    CSCTL0_H = CSKEY_H;                     // Unlock CS registers
    CSCTL1 = DCOFSEL_3 | DCORSEL;           // Set DCO to 8MHz
    CSCTL2 = SELA__VLOCLK | SELS__DCOCLK | SELM__DCOCLK;
    CSCTL3 = DIVA__1 | DIVS__1 | DIVM__1;   // Set all dividers
    CSCTL0_H = 0;                           // Lock CS registers

    // Configure USCI_A3 for UART mode
    UCA3CTLW0 = UCSWRST;                    // Put eUSCI in reset
    UCA3CTLW0 |= UCSSEL__SMCLK;             // CLK = SMCLK
    // Baud Rate calculation
    // 8000000/(16*9600) = 52.083
    // Fractional portion = 0.083
    // User's Guide Table 21-4: UCBRSx = 0x04
    // UCBRFx = int ( (52.083-52)*16) = 1
    UCA3BRW = 52;                           // 8000000/16/9600
    UCA3MCTLW |= UCOS16 | UCBRF_1 | 0x4900;
    UCA3CTLW0 &= ~UCSWRST;                  // Initialize eUSCI
    UCA3IE |= UCRXIE;                       // Enable USCI_A3 RX interrupt

    __bis_SR_register(LPM3_bits | GIE);     // Enter LPM3, interrupts enabled
    __no_operation();                       // For debugger
}

#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=EUSCI_A3_VECTOR
__interrupt void USCI_A3_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(EUSCI_A3_VECTOR))) USCI_A3_ISR (void)
#else
#error Compiler not supported!
#endif
{
    switch(__even_in_range(UCA3IV, USCI_UART_UCTXCPTIFG))
    {
        case USCI_NONE: break;
        case USCI_UART_UCRXIFG:
            while(!(UCA3IFG&UCTXIFG));
            UCA3TXBUF = UCA3RXBUF;
            __no_operation();
            break;
        case USCI_UART_UCTXIFG: break;
        case USCI_UART_UCSTTIFG: break;
        case USCI_UART_UCTXCPTIFG: break;
        default: break;
    }
}