which address to use in texas

[OUR LOVE 1]

On the government website there are two addresses to send K-1 applications,

File Form I-129F at the USCIS Dallas Lockbox facility:
For U.S. Postal Service (USPS):

USCIS
P.O. Box 660151
Dallas, TX 75266

For USPS Express Mail and courier deliveries:
USCIS
Attn: I-129F
2501 South State Highway 121 Business
Suite 400
Lewisville, TX 75067

Which one do I mail my K-1 application too? I plan to send it FedEx, is this ok?

Thanks for the help.

[JDWright 30]

USCIS
Attn: I-129F
2501 South State Highway 121 Business
Suite 400
Lewisville, TX 75067

FedEx is fine

[Pheebs1201 269]

For FedEx it would be the below address:

For USPS Express Mail and courier deliveries:
USCIS
Attn: I-129F
2501 South State Highway 121 Business
Suite 400
Lewisville, TX 75067