Juniper SRX5800 Hardware Manual page 181

SRX5K-SPC-4-15-320 (SPC2) Services Processing Card
NOTE: You must have high-capacity power supplies (either AC or DC) and high-capacity
fan trays installed in the services gateway in order to install and use SPC2. If you do not
have high-capacity power supplies and fan trays installed, the services gateway will log an
alarm condition when it recognizes the SPC.
High-capacity cooling system (upper and lower fan trays)
NOTE: The high-capacity cooling system satisfies cooling requirements of SPC2 and must
be used for proper cooling.
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