The Cisco StackPower cables are thick but flexible, and they carry power as well as a data signal to provide a communications channel among the switches in the power stack. StackPower and XPS cables are keyed and have colored bands on the ends to help you understand what cable plugs into what switch or XPS.A StackPower cable has colors bands on the cable ends, green on one end and yellow on the other end. This cable can be used between Catalyst 3750-X switches and an XPS. Note that the connector with the blue band can only connect into a Catalyst 3750-X switch while the connector with the yellow band can connect to a Catalyst 3750-X or an XPS.An XPS cable has a color band on the cable ends as well, red on one end and yellow on the other end. This cable can only be used to connect Catalyst 3750-X or 3560-X switch to an XPS. Note that the connector with the red band can only connect to an XPS while the connector with the green and blue band can connect to Catalyst 3750-X or 3560-X switch.The Cisco Catalyst 3750-X Series Switches come with four power supply options and any of them can be used on any switch in a stack and in any combination.
Cisco QSFP to QSFP copper direct-attach 100GBASE-CR4 cables are suitable for very short links and offer a cost-effective way to establish a 100-Gigabit link between QSFP-100G ports of Cisco switches within racks and across adjacent racks.
The Cisco® 25GBASE SFP28 (Small Form-Factor Pluggable) portfolio offers customers a wide variety of high-density and low-power 25 Gigabit Ethernet connectivity options for data center and high-performance computing networks applications. The 25G Modules are based on SFP28 form factor
Crossover and straight-through cables are used in order to connect switch ports or interfaces to network devices. Consult this table in order to see when to use each of these cable types. Find the device in the left-hand column and match it up with another device in the top row. The intersection of these two devices gives you the cable type used to connect them together.
Cisco offers a comprehensive range of pluggable optical modules for the Cisco ONS family of multiservice platforms. The wide variety of modules gives you flexible and cost-effective options for all types of client interfaces. Cisco offers a range of GBICs for Gigabit Ethernet use, a wide variety of SFP modules, XFP modules and has recently introduced SFP+, CXP and CFP pluggable modules. These small, modular optical interface transceivers offer a convenient and cost-effective solution for an array of applications in the data center, campus, metropolitan-area access and ring network, storage area network, and long-haul network.