Thank you for your email dated 26 April, 2017.
USN is meaning of US Note, it was one of the currency that we offer to customer in our Multi-Currency Savings Account. However, the USN service has no longer be offered from 18 April, 2017, please conduct your US currency account in USD for the exchange rates and service charges may apply. Thank you.
Should you have further queries, please do not hesitate to contact our Customer Services Hotline at (852)2290 8888 press 2 after language selection.
DBS Bank (Hong Kong) Limited