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.
However, either amount may be affected by the five-month waiting period that applies to SSDI claims. If Social Security accepts an applicantâs alleged onset date and it becomes the established onset date, then back payments and/or retroactive payments will apply beginning five months after the onset date.