Datasheet

Connection
COPYRIGHT & TRADEMARKS
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user will be required to correct
the interference at his own expense.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1) This device may not cause harmful interference.
2) This device must accept any interference received, including interference that may cause
undesired operation.
Any changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Specifications are subject to change without notice. is a registered trademark of
TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or
registered trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or used to make
any derivative such as translation, transformation, or adaptation without permission from
TP-LINK TECHNOLOGIES CO., LTD. Copyright © 2016 TP-LINK TECHNOLOGIES CO., LTD.
All rights reserved.
http://www.tp-link.com
Do not use this product near water, for example, in a wet basement or near a swimming pool.
Avoid using this product during an electrical storm. There may be a remote risk of electric
shock from lightning.
Do not point or stare directly into the beam or into the optical port of the transceiver when it is
operating, as this can injure your eyesight.
SAFETY NOTICES
FCC STATEMENT
This is a class A product. In a domestic environment, this product may cause radio
interference, in which case the user may be required to take adequate measures.
CE Mark Warning
Cautions
TL-SM321B
TL-SM321A
Single-mode Fiber
Switch
Switch
Port Type
Fiber Type
Data Rate
Wave Length
Tx:1550nm
Rx:1310nm
IEEE 802.3z, CSMA/CD, TCP/IP
Single-mode Fiber
9/125 um Single-mode
10km
1.25Gbps
LC
3.3V
FCC, CE
Rx:1550nm
Tx:1310nm
Standards and Protocols
Operation Temperature
0˚C~70˚C (32˚F~158˚F)
Storage Temperature
-40˚C~80˚C (-40˚F~176˚F)
Storage Humidity
5%~90% RH, Non-condensing
Operation Humidity
Cable
10%~90% RH, Non-condensing
Normal TL-SM321BTL-SM321A
General Specifications
Environmental and Physical Specifications
Max. Cable Length
Power Support
Safety & Emission
Please use only the TL-SM321A and TL-SM321B together for fast and reliable connectivity between switches.
T3700G-28TQ, T2700G-28TQ,
T2600G Series Switches
T1600G Series Switches
T1700G series Switches
T1700X series Switches
2/3/5 Series Switches with SFP Slots
MC220L
TP-LINK Compatible Products
Note:
The SFP modules may be incompatible with other vendors’ devices. We recommend
that you use only TP-LINK SFP modules on your TP-LINK devices.