Puzzle Time !!?

12345678910
Across
  1. 6. The port which transfers data serially one bit at a time.
  2. 7. The port used as a plug and play interface between a computer and add on devices.
  3. 9. It provides power to motherboard when system is off.
  4. 10. It is CPU’s working memory.
Down
  1. 1. High speed memory placed between CPU and RAM.
  2. 2. Large PCB connects all system components.
  3. 3. The memory which stores booting information.
  4. 4. It converts AC power to DC power.
  5. 5. The memory which must be refreshed continuously to avoid loss.
  6. 8. The wire which carry address.