Are there specific connectors included with this power supply, and do they support additional components like extra hard drives or graphics cards?

Connectors included with this power supply are Pin1- 4Wire 4Pin and Pin2 - 8Wire 8Pin.

Questions & Answers: 290W Replacement Power Supply for Dell Optiplex 3020 7020 9020 Precision T1700/ PowerEdge T20 Compatible P/N: RVTHD KPRG9 HYV3H D290A001L M/N:L290AM-00 PS-3291-1DF H290EM-00 H290AM-00

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290W Replacement Power Supply for Dell Optiplex 3020 7020 9020 Precision T1700/ PowerEdge T20 Compatible P/N: RVTHD KPRG9 HYV3H D290A001L M/N:L290AM-00 PS-3291-1DF H290EM-00 H290AM-00

Compatible Model: Dell Optiplex 3020 7020 9020/ Prcision T17e T20 (MT Mini Tower)
Compatible P/N: RVTHD KPRG9 HYV3H H290AM-00 D290A001L
Compatible M/N: L290AM-00 L290EM-01 H290AM-00 H290EM-00 AC290AM-00 D290EM-00 D290A001L PS-3291-1DB PS-3291-1DF
Connectors: Pin1- 4Wire 4Pin, Pin2 - 8Wire 8Pin
AC Input(50-60Hz): 100-240V~/5.4A, DC Output: Max Output 290W

$181^.99 –