
A P P E N D I X A
Technical Specifications
This appendix contains the following topics:
•Switch Specifications, page 
•Power Supply Module Specifications, page 
Switch Specifications
| Table  | Environmental and Physical Specifications | |
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| Environmental Ranges | 
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| Operating temperature | ||
| Storage temperature | ||
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| Relative humidity | 5 to 95% (noncondensing) | |
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| Operating altitude | Up to 10,000 ft (3049 m) | |
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| Storage altitude | 
 | Up to 15,000 ft (4570 m) | 
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| Thermal spacing | 1.75 in. (4.4 cm) | |
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| Operating shock | 30 g at 11 ms | |
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| Physical Specifications | 
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| Weight: | 
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| Cisco  | 9.1 lb (4.1 kg) (no power supply module) | |
| Cisco  | 10 lb (4.5 kg) (no power supply module) | |
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| Dimensions (H x D x W): | 
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| Cisco  | 1.75 x 17.5 x 14.0 in. (4.45 x 44.5 x 35.6 cm) | |
| Cisco  | 1.75 x 17.5 x 14.0 in. (4.45 x 44.5 x 35.6 cm) | |
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1.The maximum operating temperature of the switch varies depending on the type of SFP module that you use. See Table 
Cisco CGS 2520 Hardware Installation Guide
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