I presume the board that I have purchased is a later issue (10 13) than the schematic !
The ICSP connector for U5 appears as Conn1 on the schematic and J4 on the silk screen.
The ICSP connector for U6 appears as Conn2 on the schematic and J1 on the silk screen
On the schematic there are two Conn2 the USB connector (conn2) appears as J3 on the silk screen !
Also it would help if the connector reference numbers were added to the board layout PDF
Regards
Geoff