To use BC-USB-Kit, you need to solder pin headers at the through-holes of BC-USB-Kit.
BC-USB-Kit two types of pins: a DIP 28p pin header and an L-shaped 6-pin pin header.
The pitch of these pins is 100mil. You may apply to any other pins if their pitch is 100mil.
To use BC-USB-Kit with an IC socket, bread board, and so on, a DIP 28p pin header is soldered to J1 expansion and ICSP connection terminals.
To connect BC-USB-Kit with an In-Circuit Debugger, an L-shaped 6-pin pin header is soldered to J2 ICSP connection terminals.
You can cut a longer version of L-shaped pin header for this use.