Usually there are 4 of them either on sides or/and on the bottom. While you do not have to use all 4 of them, it is recommended you do.
4 screws
4
Screws?There are no screws on an AR15 bolt, a pin secures the assembly
4 screws
The number of screws that secure an optical drive to the case typically depends on the computer case design and the manufacturer. Generally, most standard PC cases require two to four screws to secure the optical drive in place. Desktop Cases: In standard desktop cases, an optical drive is usually secured with two screws on each side, making it a total of four screws. Some cases, however, may use only one screw per side, making it a total of two screws. Tool-less Cases: Some modern cases feature a tool-less design with brackets or latches to hold the optical drive in place. These may not require any screws at all or might use a couple of screws for added stability. Manufacturer Specifications: Always refer to the specific instructions provided by the manufacturer of the computer case for the exact number and placement of screws needed for securing the optical drive. If you are unsure, check your case manual or inspect the drive bay area to see how the optical drive is intended to be mounted.
There are many hard drive manufacturers. Seagate is a best solution.
Many computer users may never need to know where their computer hard drive is located. However, there are some that will inevitably have to replace their hard drive for whatever reason. Doing so may seem difficult, but it really isn’t. Listed below are some steps which will help you safely remove a hard drive. • The first step is one of the most important steps of this process. Make a back up of everything on your computer. Anything that is on your computer that you cannot risk losing needs to be backed up on a disk or external drive. If somebody other than you plans on using that hard drive, you should erase all the data on that drive as well. You can do so by reformatting your hard drive. • The second step is also very important. For your safety, once you have opened the case, any metal, such as rings, bracelets or metal near the computer should be removed. Once you have removed all the metal from around the computer, unplug the computer from the electrical outlet. After, and only after, the computer has been unplugged, touch the metal casing of the computer to prevent any static charge. • Once you have located the hard drive, disconnect it. Then unplug the hard drive from the power cables and the IDE. Grab the IDE cable and gently pull it until the connector breaks free. This can seem difficult if the connector is fitted tightly, but just give it a little tug. Make sure you pull straight out. You do not want to bend any pins during the process. • Once this is completed, you can remove the hard drive. If the hard drive is in a metal cage, find the screws that are holding it in place and remove them. Once the cage is free, remove the screws from the cage to free the hard drive. If your hard drive is not in a cage, then you will need to remove the screws on either side of the hard drive and take it out of the case. There you have it. You have successfully and safely removed your computer’s hard drive. Make sure you keep all the little screws somewhere they will not be lost, as you will need them to install your new hard drive.
how many types hard disk drives
Wheel and Axle to some extent for the hard drives. There are many screws that are used to hold the parts together. Pulleys and gears are in the CD-Rom Drive. I am sure there are others.
You need a gunsmith.
3 on each side and two on each end. Make sure you have gone into the joists 1 1/2". Shim the gaps where the screws are and use heavy screws.
Surveillance videos will need two essential elements - a camera and a storage device for the footage. While many cameras provide internal storage of video, more secure options transmit the video to a secure location, such as a computer hard drive.