By handling all the audio input and output signals of your system it performs the same function as the Sound Card in a typical computer. The main differences are that Audio Interfaces typically have mic preamps onboard, provide Phantom Power for condenser mics, and have easy-access external inputs and outputs.
1 Unemployment insurance payments (benefits) are intended to provide temporary financial assistance to unemployed workers who meet the requirements of State law.  Each State administers a separate unemployment insurance program within guidelines established by Federal law.
The Extended Benefits (EB) program is the final stage of federal Unemployment Insurance (UI), which means you have exhausted your 20 weeks of state UI and have qualified for four tiers of Emergency Unemployment Compensation (EUC). The EB program will end in South Carolina next week.