US 11,737,204 B2
Linecard system using riser printed circuit boards (PCBS)
Pranav Devalla, Santa Clara, CA (US); Harold Wang, Santa Clara, CA (US); Prasad Venugopal, Santa Clara, CA (US); and Aravind Musunuri, Santa Clara, CA (US)
Assigned to ARISTA NETWORKS, INC., Santa Clara, CA (US)
Filed by Arista Networks, Inc., Santa Clara, CA (US)
Filed on Jan. 19, 2022, as Appl. No. 17/578,915.
Application 17/578,915 is a continuation of application No. 16/575,171, filed on Sep. 18, 2019, granted, now 11,266,007.
Prior Publication US 2022/0141949 A1, May 5, 2022
Int. Cl. H01R 12/52 (2011.01); H05K 1/02 (2006.01); H05K 1/14 (2006.01); H01R 12/72 (2011.01)
CPC H05K 1/0209 (2013.01) [H01R 12/52 (2013.01); H01R 12/724 (2013.01); H05K 1/144 (2013.01); H05K 2201/066 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A communication module comprising:
a single main printed circuit board (PCB);
a plurality of port cards, each port card comprising a port card PCB and communication electronics disposed on the port card PCB, the plurality of port cards vertically mounted at a front end of the single main PCB in orthogonal relation to the main PCB, wherein a portion of the port card PCB of each port card is mounted on a surface of the main PCB;
a plurality of connectors disposed at a rear end of the main PCB opposite the front end to receive fabric cards; and
a plurality of processors disposed on the surface of the main PCB between the plurality of port cards and the plurality of connectors,
the plurality of port cards horizontally spaced apart from each other along the front end of the main PCB to allow flows of air to flow between the spaced apart port cards in a direction from the front end of the main PCB toward the rear end of the main PCB to cool the processors on the main PCB.