X2-10GB-LR 10Gbase-LR 10Gbase-LR X2 Module, SMF 1310nm, 10KM.
We offer new CISCO X2-10GB-SR X2-10GB-LR X2-10GB-LX4

XENPAK /X2/XFP 10GB:
XENPAK-10GB-SR 10G base-SR XENPAK Module, MMF, 0.3KM, 850nm
XENPAK-10GB-LR 10G base-SR XENPAK Module, SMF, 10KM, 1310nm
XENPAK-10GB-ER 10G base-SR XENPAK Module, SMF, 40KM, 1550nm

X2-10GB-SR 10Gbase-SR X2 Module, MMF 850nm, 330M
X2-10GB-LR 10Gbase-LR X2 Module, SMF 1310nm, 10KM
X2-10GB-ER 10Gbase-ER X2 Module, SMF 1550nm, 40KM