**Comments on MCH availability**

   * Considering the data rate from COBO cards, it's important to have a 10Gb switch with a 10Gb uplink on front panel
   * two MCH are available with a full 10GbE switch on up to 12 AMC
     * from Vadatech : UTC0001-210-300-010 with one 10GbE uplink on face plane
       * price 5165€
       * {{vadatech_utc001_spec.pdf | vadatech utv001 specifications}}
     * from NAT : MCH-Base12-GbE-XAUIx48 with two 10GbE uplink on face plane wich enable to link several µTCA chassis
       * Currently, CX4 (copper) connectors available
       * Q3-2009 optical links available
       * price 3100€
       * {{nat-mch_datasheet_web_2008.pdf | NAT MCH datasheet}}
   * these switches are connected to the ports 8-11 of back plane


**Proposal for crates**
   * from SCHROFF : 9 AMC full size, double width slots
     * {{microtca_schroff63972-175.pdf | Schoff crate doc}}
   * from ELMA : 10 AMC full size, double width slots   
     * {{microtca_elma_ft-microtca_8ut11.pdf | Elma crate data sheet}}