Depending on the installed power supply modules, each port can deliver up to 60 W of Cisco UPOE. See the
Power Supply Modules, on page 25
for the power supply matrix that defines the available PoE, PoE+, and
Cisco UPOE power per port. The output of the PoE+ circuit has been evaluated as a Limited Power Source
(LPS) per IEC 60950-1.
Restrictions for the WS-C3850-12X48U-L, WS-C3850-12X48U-S and WS-C3850-12X48U-E switch models:
• A maximum of 28 ports are available for UPoE connections. This is because some power from the power
supplies is diverted to the switch, and only the remaining power is transmitted to the ports.
Note
SFP and QSFP Module Slots
The uplink and downlink ports for the Catalyst WS-C3850 switch models are as follows.
• The downlink ports on the Catalyst WS-C3850-12S and WS-C3850-24S switch models support standard
SFP modules.
• The downlink ports on the Catalyst WS-C3850-12XS and WS-C3850-24XS switch models support
standard SFP+ modules.
• The 10G downlink ports on the Catalyst WS-C3850-48XS-S, WS-C3850-48XS-F-S, WS-C3850-48XS-E
and WS-C3850-48XS-F-E switch models support standard SFP+ modules.
• The 40G downlink ports on the Catalyst WS-C3850-48XS-S, WS-C3850-48XS-F-S, WS-C3850-48XS-E
and WS-C3850-48XS-F-E switch models support standard QSFP modules.
For supported SFP modules, refer to the Cisco Transceiver Modules Compatibility Information at
http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html
For information about the (uplink) SFP module slots on the network modules, see
.
Note
Management Ports
The management ports connect the switch to a PC running Microsoft Windows or to a terminal server.
• Ethernet management port. See
Ethernet Management Port, on page 30
.
• RJ-45 console port (EIA/TIA-232). See
RJ-45 Console Port, on page 31
• USB mini-Type B console port (5-pin connector).
The 10/100/1000 Ethernet management port connection uses a standard RJ-45 crossover or straight-through
cable. The RJ-45 console port connection uses the supplied RJ-45-to-DB-9 female cable. The USB console
port connection uses a USB Type A to 5-pin mini-Type B cable. The USB console interface speeds are the
same as the RJ-45 console interface speeds.
Catalyst 3850 Switch Hardware Installation Guide
9
OL-26779-05
Product Overview
SFP and QSFP Module Slots
