The VIP-X1600-XFB from Bosch is a VIP X1600 XF Chassis For 4x4 MPEG-4 Encoder And Decoder (Excluding PSU). The VIP-X1600-XFB base system provides two 1 Gbps Ethernet ports on the front and an additional 1 Gbps Ethernet port on the rear. This provides a greater choice of network connectivity and allows for easier inside-rack cabling like, for example, direct connection to an iSCSI storage array. This base system also features a 1 Gbps small form-factor pluggable (SFP)slot on the front, for example, an optical transceiver to enable direct fiber connection to a remote network. For applications not benefiting from these advanced features the VIP-X1600-B base system is available that just provides two 1 Gbps Ethernet ports, one on the front and one on the rear.