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Data sheet Cisco public © 2025 Cisco and/or its affiliates. All rights reserved. Mixed stacking between Catalyst 9300X and Catalyst 9300 models are supported at StackWise-480 speeds. Mixed stacking between Catalyst 9300 and Catalyst 9300X and Catalyst 9300 higher-scale models (C9300- 24UB, C9300-24UXB, C9300-48UB) is not supported. You cannot stack fixed uplink models (C9300L SKUs) with modular uplink models (C9300 SKUs) or other Catalyst switches, such as the Cisco Catalyst 3850 and 3650 Series. Any combination of Catalyst 9300 Series models can form a stack. Separately, any combination of Catalyst 9300L models can form a stack. Catalyst 9300 Series higher-scale SKUs (C9300-24UB, C9300-24UXB, C9300-48UB) need to be stacked with other higher-scale models. StackWise cables that are available to configure stacking with Catalyst 9300 Series modular uplink models (C9300X and C9300 SKUs) come in lengths of 0.5m, 1m, and 3m. The optional StackWise-320 kit for Catalyst 9300 Series fixed uplink models (C9300L and 9300LM SKUs) consists of two stack adapters and a stacking cable. The default stacking cable is 0.5m, but options of 1m and 3m are also available. Table 6 lists the stacking accessories. Table 6. Stacking accessories Model Description STACK-T1-50CM Data stack 50 cm (cable option with C9300 and C9300X SKUs) STACK-T1-1M Data stack 1m (cable option with C9300 and C9300X SKUs) STACK-T1-3M Data stack 3m (cable option with C9300 and C9300X SKUs) C9300L-STACK-KIT Stack kit for C9300L SKUs only: Two data stack adapters and one data stack cable STACK-T3-50CM Data stack 50cm cable (default cable with C9300L Stack Kit) STACK-T3-1M Data stack 1m cable (cable option with C9300L Stack Kit) STACK T3-3M Data stack 3m cable (cable option with C9300L Stack Kit) C9300L-STACK-KIT2 Stack kit for C9300LM and C9300L SKUs: Two data stack adapters and one data stack cable STACK-T3A-50CM Data stack 50cm cable (default cable with C9300L Stack Kit2) STACK-T3A-1M Data stack 1m cable (cable option with C9300L Stack Kit2) STACK T3A-3M Data stack 3m cable (cable option with C9300L Stack Kit2)