PIC16F877A learning board

[micromacro]

I am soldering parts on my PIC16F877A learning board. But I have insufficient info about R1 component on upper left corner.. Can you help me figure out what kind of resistor is that?

Schematic and PCB on photos:

http://imageshack.us/photo/my-images/823/45106697.jpg/
http://imageshack.us/photo/my-images/825/46087841.jpg/
http://imageshack.us/photo/my-images/189/79845887.jpg/

Thanks

 

[micromacro]

I see power supply connector & USB are in that circuit..

 

[micromacro]

Or should I ask what is R1 on my schematic? Resettable fuse?

schematic in attachment..

Thanks