• Mezzanine card slot C supports Fabric C. This card must match the fabric type of I/O modulesinstalled in I/O module bays C1 and C2.• Mezzanine card slot B supports Fabric B. This card must match the fabric type of I/O modulesinstalled in I/O module bays B1 and B2.The blade supports SFF mezzanine cards. x8 PCIe Gen 3 cards are supported.Removing a mezzanine cardPrerequisitesCAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat are shipped with your product.NOTE: You must remove a mezzanine card to replace a faulty mezzanine card or service othercomponents inside the system.1. Follow the safety guidelines listed in the Safety instructions section.2. Follow the procedure listed in the Before working inside your system section.Steps1. Open the retention latch by pressing the ridged area on the latch, and lifting the end of the latch.CAUTION: To prevent damage to the mezzanine card, hold the card only by its edges.2. Lift the mezzanine card away from the system.3. Close the retention latch.Figure 16. Removing and installing a mezzanine card1. mezzanine card (2) 2. mezzanine card connector (2)3. retention latch77