Dell PowerVault TL4000 - Manual (Page 217)

5. Tighten the captive thumbscrews ( 7 in Figure 10-6 on page 10-5) until the
drive sled is secure.
6. If you are installing a drive sled without ESD springs (see Figure 10-4 on page
10-3), apply conductive tape to the sled as shown in Figure 10-9 on page 10-8.
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Figure 10-8. Pushing the drive sled into the library (drive sled without ESD springs shown)
Chapter 10. Check, Adjust, Remove, and Replace 10-7