user35151: I was looking at the Arduino Nano's schematic and noticed a resistor that seems to be pointless (RP2C on this picture).

Also there is numbers 6 and 3 on it, does it mean that resistor is connected to pins 6 and 3 on FT232 or to the same pins on Atmega328?

user19409: The resistor is one of 4 resistors that make up an SMD resistor array, RP2. It is seen on the board here:

The resistor array works like this:
 
The resistor on this array is spare, so both terminals are grounded.

35151: <p>I was looking at the Arduino Nano's <a href="http://download.arduino.org/products/NANO/Arduino%20Nano-Rev3.2-SCH.pdf" rel="nofollow noreferrer">schematic</a> and noticed a resistor that seems to be pointless (RP2C on this picture).
<a href="https://i.stack.imgur.com/zIbvS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zIbvS.png" alt="Strange resistor RP2C"></a>
Also there is numbers 6 and 3 on it, does it mean that resistor is connected to pins 6 and 3 on FT232 or to the same pins on Atmega328?</p>
 19409: <p>The resistor is one of 4 resistors that make up an SMD resistor array, RP2. It is seen on the board here:<br>
<a href="https://i.stack.imgur.com/BemUn.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BemUn.jpg" alt="Arduino Nano underside"></a></p>

<p>The resistor array works like this:<br>
<a href="https://i.stack.imgur.com/FaBSm.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FaBSm.gif" alt="Resistor array"></a>  </p>

<p>The resistor on this array is spare, so both terminals are grounded.</p>
