To represent the situation with an equation, we start by noting the costs involved:
- The cost of the monitor is $127.95.
- The cost of each hard drive is $68.50.
- The total cost for the computer equipment is $675.95.
Let \( x \) represent the number of hard drives purchased. The total cost for the hard drives would then be \( 68.50x \).
The equation representing the total cost is:
\[ 127.95 + 68.50x = 675.95 \]
This equation accounts for the cost of the monitor plus the cost of the hard drives equating to the total amount spent by the office manager.