H3C SR6608/6604 Routers Installation Manual Chapter 1 Router Overview1-15Note:z Memory modules must be used in pairs. Make sure they are of the same type andsize.z For a Combo interface, the default operating interface is the electrical interface.z For a Combo interface, you can use either the electrical Ethernet interface or theoptical Ethernet interface. You can use the combo enable { copper | fiber }command in interface view to switch between the optical and electrical interfaces.z For details about the combo enable { copper | fiber } command, refer to H3C SR66Series Routers User Manual.III. LEDsThe LEDs on FIP-200 have the same meanings as those on FIP-100. See Table 1-7.IV. SlotsAn FIP-200 can be inserted in slot 2, 3, 4, or 5 of the SR6608 and slot 2 or 3 of theSR6604.The interface module slots on FIP-200 are numbered 1 and 2 from right to left, asshown in Figure 1-11.Figure 1-11 Interface module slots on FIP-200Note:z The numbers 1 through 2 in Figure 1-11 represent Slot 1 and Slot 2 respectively.Actually, these numbers are not silk-screened on an FIP-200.z You can insert an MIM only at the bottom of an interface module slot of FIP-200because only the bottom of the slot has a connector.