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.
Because Social Security decisions can take so long, you may be owed retroactive benefits for anywhere from three months to fifteen months or more. Note that Social Security will pay you only three months' of SSI at once in your first payment of backpay.