Sonnet Technologies Echo Express and Echo Express Pro Thunderbolt Expansion Chassis - Manual (Page 9)

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Chapter 3 – PCIe Card Installation Steps
6. Remove a PCIe card from its packaging, handling the card by its edges
and without touching any components or gold connector pins.
7. Line up the card’s connector with the slot, and then gently but firmly
press the card straight into the slot; do not rock the card or force the
card into the slot. If you encounter excessive resistance, check the
card’s connector and the slot for damage, and then try inserting the
card again
(Figure 3).
8. Secure the card using the screw you removed previously (Figure 3).
9. Optional: Install the second PCIe card into slot 2 following the
instructions in step 7 (Echo Express Pro only), or I/0 plate in the
second opening.
10. Secure the card or plate using the screw you removed previously
(Figure 3).
11. Replace the top cover, sliding it forward until it stops (Figure 4).
12. Secure the top cover by replacing the locking plate (Figure 4).
WARNING: When handling computer products, take care to prevent
components from being damaged by static electricity; avoid working
in carpeted areas. Handle expansion cards only by their edges and avoid
touching connector traces and component pins. Also, avoid touching the
Echo Express chassis’ circuit boards and any of its components.
Figure 3
Figure 4