No. That's part of some programmer, but it's not part of a PB10.
The PB10 is an ISA card, with a 40 pin ribbon cable the plugs into the back, and leads to a little board very much like that one, with a ZIF socket on it. But no other components - just a ZIF socket. The programmer itself is the ISA board, and has a lot more chips and components than that on it. It's roughly the size of an ISA network card or something.
Edit: Now that I think about it, that might be part of a PB10, in the sense that I think it's a programming adapter for other devices. That would replace the usual socket board on the end of the cable. I don't know specifically what devices it's needed for though, I can check my manuals when I get home. But still, it's not a programmer by itself.
Edit Edit: OK, now I feel stupid. It was right there in front of my face. That's an adapter, for the PB10, to allow it to program 87C751 and 87C752 microcontrollers.
-Ian