OrangePi 2g-IOT not boot in T-Card mode

roman_ex

Hi to all,

I use sd-card SanDisk 16gb Class 10 (recommended in this post).
Serial TTL <-> USB adapter speed is 921600
Jumper is set in T-Card mode
Power cable: Samsung (2A)
After power up, after a few seconds, I connecting USB adapter and run putty. Board does not boot (screen is black, the processor does not heat up).

Help me to understand!

Regards, Roma