ProcedureStep 1. Make preparation for the task.a. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to thetop cover, or remove the server from the rack. See “Remove the server from rack” on page 63.b. Remove the top cover. See “Remove the top cover” on page 277.c. If your server comes with a riser 1 assembly, remove it first. See “Remove a rear riserassembly” on page 232. Then disconnect the cables from the rear OCP interposer card.Step 2. Remove the rear OCP interposer card.Figure 59. Removing the rear OCP interposer carda. Loosen the thumbscrew that secures the rear OCP interposer card.b. Press and hold the blue latch.c. Pull out the rear OCP interposer card.After you finish1. Install a new rear OCP interposer card. See “Install the rear OCP interposer card” on page 102.2. If you are instructed to return the component or optional device, follow all packaging instructions, anduse any packaging materials for shipping that are supplied to you.Install the rear OCP interposer cardFollow instructions in this section to install the rear OCP interposer card.About this taskAttention:• Read “Installation Guidelines” on page 47 and “Safety inspection checklist” on page 48 to ensure that youwork safely.• Power off the server and peripheral devices and disconnect the power cords and all external cables. See“Power off the server” on page 62.102 ThinkSystem SR665 V3 User Guide