Does the installation of a stack card in an S series switch affect functions of the front card

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The stack card and extended rear channel card of a switch use the same slot, and they cannot be installed simultaneously. When a stack card is installed, no extended card can be installed in the switch.
Therefore, when a stack card is installed in a switch, only two front interfaces of the switch are available for the front card.

Other related questions:
Whether front cards and rear stack cards can be used together on S series fixed switches
S5700-EI, S5710-LI, and S5700-C-SI series fixed switches have front and rear card slots. Font card slots can have 2-port or 4-port service interface cards installed. Rear card slots can have stack cards or extended channel cards installed. The rules are as follows: -- A 4-port ES5D000G4S01 or ES5D00G4SA01 GE front card and a 4-port ES5D000X4S01 10GE front card must be used with an ES5D00ETPB00 rear extended channel card; otherwise, only two ports on the 4-port front card can work. -- If an ES5D000G4S01 or ES5D00G4SA01 front card is used with an ES5D00ETPC00 rear stack card on an S5700-EI, S5700-SI, or S5710-C-LI switch, only the first two ports on the front card can work when the switch is working normally. If the ES5D000X4S01 front card is used, only ports 1 and 3 are available. --The ES5D00ETPB00 card used with the ES5D000X4S01 front card must have a PCB of version C. -- The S5700-EI switch that uses the ES5D000X4S01 front card must have a PCB of version B or later (version C on S5700-52C-EI). You can run the display version command to check the PCB version of a switch. For details about cards, see the Hardware Description. For the hardware description of S5700 switches, see S5700 Hardware Description. For the hardware description of S6700 switches, see S6700 Hardware Description.

Differences between stack cards and extended rear channel cards of S series switches
The stack card and extended rear channel card of a switch use the same slot, and they cannot be installed simultaneously. Stack cards are used when switches set up a stack in stack card connection mode. The extended channel card of a switch must be used together with the front four-interface card. To enable a front card of a switch, an extended rear channel card must be installed. If not, only two front interfaces are available.

Card installation and replacement on S series switches
For card installation and replacement of switches, see the Hardware Installation and Maintenance Guide. For the S9300 and S9300E, see S9300&S9300E Hardware Installation and Maintenance Guide. For the S7700 and S9700, see S7700&S9700 Hardware Installation and Maintenance Guide. For the S12700, see S12700 Hardware Installation and Maintenance Guide.

How to install a CSS card on an S series switch
For details about how to install a CSS card on S7700&S9700 series, see "(Optional) Installing a CSS Subcard or an Enhanced Flexible Service Subcard" at S7700&S9700 Hardware Installation and Maintenance Guide-Installing Modules. For details about how to install a CSS card on S12700 series, see "(Optional) Installing a CSS Subcard" at S12700 Hardware Installation and Maintenance Guide-Installing Modules. For details about how to install a CSS card on S9300 series, see "(Optional) Installing a CSS Subcard or an Enhanced Flexible Service Subcard" at S9300 Hardware Installation and Maintenance Guide-Installing Modules.

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