Cisco 3900 Series IOS Software Universal Images 15.1(4)M

Part Number	Description
S39UK9-15104M	Cisco 3925-3945 IOS UNIVERSAL
S39NPEK9-15104M	Cisco 3925-3945 IOS UNIVERSAL - NO PAYLOAD ENCRYPTION
S39EUK9-15104M	Cisco 3925-3945 SPE IOS UNIVERSAL
S39ENPEK9-15104M	Cisco 3925-3945 SPE IOS UNIVERSAL - NO PAYLOAD ENCRYPTION