added remark about USB cable, new pdf

diff --git a/trb3/main.pdf b/trb3/main.pdf
index 415fc4bda37deee85faa27dbe768cc0706c3a231..f414bd87b7f939dcd391f90db4c1a30df71f35f7 100644 (file)
Binary files a/trb3/main.pdf and b/trb3/main.pdf differ