Dell Precision M40 - Manual (Page 57)

4. Remove the new hard drive from its packaging.
Save the original packaging to use when you store or ship the hard drive.
NOTICE: If the drive does not slide in easily, pull it out and try again. To avoid damage, do not force the drive into the bay.
5. Gently push the new hard drive into the drive bay until the drive door is flush with the computer case.
6. Push down on the drive door until it snaps into place.
7. Replace the screw you removed in step 3. Be careful not to over tighten the screw.
If you have installed a new hard drive, follow the directions that came with the drive to partition and logically format the drive.
NOTICE: Hard drives are extremely fragile and must be handled carefully to avoid damage. Follow these guidelines:
l The primary hard drive is installed in a metal carrier to protect the drive and make installation easier. When you remove and
install hard drives, handle the drive carrier, not the drive itself.
l Never press down on the top of the drive.
l Do not bump or jar the drive.
Removing or Installing Memory Modules
NOTICE: Your computer only supports 100-megahertz (MHz) synchronous dynamic random-access memory (SDRAM) modules. It
does not support extended-data out (EDO) memory modules.
NOTICE: Do not install memory modules while the computer is in any power management modes, such as standby mode.
NOTICE: Ground yourself by touching an unpainted metal surface of a connector on the back of the computer. While you work,
periodically touch the connector to dissipate any static electricity that might harm internal components.
To remove or install memory modules, perform the following steps:
1. Complete the tasks as described in " Preparing to Work Inside the Computer ."