81Appendix D Cooling systemFor correct operation of the cooling system, you must consider the site ventilation design when youplan the installation site for the switch.The S5130-HI switches, excluding the S5130-30S-HI and S5130-54S-HI switches, use hotswappable fan trays. For correct cooling operation, install two fan trays that have the same model onone switch. For more information about available fan trays for an S5130-HI switch, see Table 35.The S5130-30S-HI and S5130-54S-HI switches use fixed fan trays and left-to-right aisles for airventilation. Ambient air flows in through the air vents in the left side panel, and exhausts through theair vents in the right side panel.Table 35 Available fan traysSwitch model Available fan tray AirflowS5130-30C-HIS5130-30F-HIS5130-34C-HIS5130-54C-HIS5130-30C-PWR-HIS5130-54C-PWR-HILSPM1FANSAAmbient air flows in through the air vents in the powermodule panel, and exhausts through the air vents in theport side, left side, and right side panels.LSPM1FANSBAmbient air flows in through the air vents in the port side,left side, and right side panels, and exhausts through theair vents in the power module panel.S5130-54QS-HILSPM1FANSAAmbient air flows in through the air vents in the powermodule panel, and exhausts through the air vents in theport side panel.LSPM1FANSBAmbient air flows in through the air vents in the port sidepanel, and exhausts through the air vents in the powermodule panel.Figure 80 Airflow through the S5130-30S-HI switch