Adding hardware such as a disc drive (e.g. CD-ROM or DVD), modem, mouse, network card, printer, sound card, or speakers are not required, but give the computer additional functionality. 1  How to install computer hardware.
Retroactive Payments. The SSDI retroactive payments are payments made to disability applicants for the time passed between the onset of the disability to the date that the application was passed. Retroactive payments are paid for 12 months prior to the date of the application being passed.
To receive Social Security Disability benefits, you must have earned at least 20 credits during the last ten years and you must be fully insured. Twenty credits is equivalent to 20 3-month periods of work in which you have paid into the Social Security system and have earned enough money to secure a credit.