WS-C3560X-48T-S

Cisco Catalyst WS-C3560X-48T-S is 48 Gigabit Ethernet ports standalone switch with no stacking option in IP base feature set. Four optional network modules and license-base software feature offer flexibility, scalability and feature extensibility in order to reduce the cost of development of business needs. IP base feature set provide up to 1005-Vlans and basic layer 3 routing features, advanced security features and management features. WS-C3560X-48T-S is designed for enterprise access/aggregation layer switching; however, customers can transparently upgrade the software feature to by purchasing IP services license to activity advanced layer 3 capability to fully support BGP, EIGRP, OSFP routing. WS-C3560X-48T-S switch comes with one default power supply module, customers can purchase additional power supply module insert into power supply bay 2 in order to power redundancy.

WS-C3560X-48T-S

Cisco Catalyst 3560-X Series Switch

48 * 10/100/1000 Ethernet ports

Four optional uplink network modules with GE or 10GE ports

Dual redundant, modular power supplies and fans

baseline Layer 3 routing features

Flexible NetFlow and switch-to-switch hardware encryption with the Service Module uplink

USB Type-A and Type-B ports for storage and console respectively and an out-of-band Ethernet management port

                                                                                                     Figure 1

Cisco Catalyst 3560-X Series Switches support 4 optional network modules for uplink ports (Figure 1);
The default switch configuration doesn't include the uplink module; 
When purchasing switch, customers have flexibility to choose any group of network modules described below:

                                                                                              Figure 2

Dual Redundant Modular Power Supplies

Cisco Catalyst 3750-X Series and 3560-X Series Switches support dual redundant power supplies (Figure 2);
One power supply is shipped with the switch by default;
Other power supply/suppliers can be purchased when ordering the switch or next time according to your needs.
If only one power supply is installed, it should always be in the power supply bay 1.

Table below shows the different power supplies available in these switches and available PoE power.

Power Supply Models