CAB-STK-E cable, 2-m, stack up to 8 switches Speeds up to 40Gbps on Catalyst 2960-X and 2960-XR using C2960X-STACK Flex Stack Plus or C2960X-HYBRID-STK Flex Stack extended hybrid module Speeds up to 20Gbps on Catalyst 2960-S and 2960-SF using C2960S-STACK or 2960S-F-STACK Flex Stack Module Its high data rate and superior signal integrity make it an ideal choice for stacking switches and consolidating networks Ideal for consolidating networks and managing traffic across multiple switches as a single entity