is my optical drive ok?

[escarlata]

According to DIC's readme.txt a drive needed for ripping CDs needs to be capable of:
- read scrambled mode
- read lead-out/in

I have an USB LG "BP50NB40" drive. I know its capable of the scrambled mode because when I launch DIC it says is capable of that, but I am unsure of the lead-out/in. How can I be sure?

[reentrant]

Try to read discs with positive and negative write offsets...

[escarlata]

Do any specific protection have those positive and negative offsets?
Can you give me some PC CD examples of those?
Thanks!