HP A5272A - SureStore E Disk System SC10 Storage Enclosure Service Manual page 132

Disk Carrier (HP-Qualified Only)
Caution Touching the disk circuit board can cause high energy
discharge and permanently damage the disk.
Disks are fragile. Handle carefully.
Caution Failure to protect against ESD can result in the loss of all current data as well
as the ability to store any future data on the disk.
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