Dropbox at Stanley Office Chennai - H1B Extension Stamping

[sharks]

Hello,

I got H1B extension and I am going to Chennai for VISA stamping. I am eligible for Drop Box option. I have two questions.

1. I uploaded my digital photo while I start the DS 160. At the confirmation page, It shows "Photo will be taken at the ASC". I am only coming to Stanley office to drop my application and passport. I will bring two copies of my photos. Will Stanley office take the digital photo?

2. Do you need appointment for dropping my application and passport at Stanley Office? Or Can I walk-in anytime?

Your prompt response is highly appreciated.

Thank you in advance.