What cable you got ? Can you point your Link ?
Here is the seller in ebay: http://cgi.ebay.com/...I...p;rd=1&rd=1
It stated that this serial cable is intended for :
D520, D800, D807, D808, D820, D840, D900,
E250, E250V, E540, E550, E780, E870, E900
T509, T519 (Samsung Trace), T629, T809