I contacted the microsoft online chat for xbox and he gave me two options
Option 1 : Pack the Adapter and send to this address. The promised to send me brand new one.I think they will send me 110 V again or may be the warranty is no more for UAE.
Europe/Middle East Service Center Addresses
Europe (including the UK) & the Channel Islands, and UAE
European Repair Centre
Teleplan Prague s.r.o.
a Dlouhém 88
251 01 Říčany-Jažlovice
Czech Republic
Option 2 : Call UAE Toll Free Number
800 0 441 1942 (toll-free) Voice 12:00 NN to 8:30 PM Monday to Friday Arabic
Both options seems to be not working.
So, i went Carrefour and got to know that i can get a new AC adapter in a store in Hamdan Center in Electra , Store name "Game Store".Finally i got a original AC Adapter for AED 125.
Finally, my son was happy with his XBox.