The SFP transceiver modules are hot-pluggable I/O devices that plug into module sockets. The
transceiver connects the electrical circuitry of the module with the optical or copper network.

You can use any combination of SFP transceiver modules that your Cisco device supports. The only
restrictions are that each port must match the wavelength specifications on the other end of the cable and
that the cable must not exceed the stipulated cable length for reliable communications.

Use only Cisco SFP transceiver modules on your Cisco device. Each SFP transceiver module supports
the Cisco Quality Identification (ID) feature which allows a Cisco switch or router to identify and
validate that the transceiver module is certified and tested by Cisco.

An optical SFP transceiver module is shown in

Figure 1

Figure 1

SFP Transceiver Module (Fiber-Optic LC Connector)

Note

SFP transceiver modules that operate with single-strand SMF, have only one optical bore; the other bore
is blocked off.

130927

G L

C - S

X - M

M C

l a s

1 2

1 C F

R 1 0

4 0 .

1 0

L N

# 5 0

7 /

0 1

0 3 -

1 3

S / N

: O

H 1 2

3 3 4

5 6

Receive optical bore

Transmit optical bore

Bail clasp

Dust plug